Vulnerability-Lookup

CVE-2026-20736 (GCVE-0-2026-20736)

Vulnerability from cvelistv5 – Published: 2026-01-22 22:01 – Updated: 2026-07-15 01:20

Title

Gitea Web Attachment Deletion: Cross-Repository Unauthorized Deletion via Missing Repo Ownership Check

Summary

Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-23 21:13 UTC

CWE

CWE-284 - Improper Access Control

Assigner

Gitea CNA under the mitre root

CNA scorecard C 61/100 over 165 records in the last 180 days details

References

7 references

URL	Tags
https://github.com/go-gitea/gitea/security/adviso…	vendor-advisory
https://github.com/go-gitea/gitea/pull/36320	patch
https://github.com/go-gitea/gitea/releases/tag/v1.25.4	release-notes
https://blog.gitea.com/release-of-1.25.4/	release-notes
https://access.redhat.com/security/cve/CVE-2026-20736	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2432205	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

2 products

Vendor	Product	Version	CPE status
Gitea	Gitea Open Source Git Server	Affected: 0 , ≤ 1.25.3 (semver)	guessed
Red Hat	OpenShift Pipelines	cpe:/a:redhat:openshift_pipelines:1

Credits

spingARbor

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-20736",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-23T21:13:08.431490Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-23T21:54:48.862Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "affected": [
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:openshift_pipelines:1"
            ],
            "defaultStatus": "unaffected",
            "packageName": "openshift-pipelines/pipelines-opc-rhel9",
            "product": "OpenShift Pipelines",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:openshift_pipelines:1"
            ],
            "defaultStatus": "unaffected",
            "packageName": "openshift-pipelines/pipelines-pipelines-as-code-cli-rhel8",
            "product": "OpenShift Pipelines",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:openshift_pipelines:1"
            ],
            "defaultStatus": "unaffected",
            "packageName": "openshift-pipelines/pipelines-pipelines-as-code-cli-rhel9",
            "product": "OpenShift Pipelines",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:openshift_pipelines:1"
            ],
            "defaultStatus": "unaffected",
            "packageName": "openshift-pipelines/pipelines-pipelines-as-code-controller-rhel8",
            "product": "OpenShift Pipelines",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:openshift_pipelines:1"
            ],
            "defaultStatus": "unaffected",
            "packageName": "openshift-pipelines/pipelines-pipelines-as-code-controller-rhel9",
            "product": "OpenShift Pipelines",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:openshift_pipelines:1"
            ],
            "defaultStatus": "unaffected",
            "packageName": "openshift-pipelines/pipelines-pipelines-as-code-watcher-rhel8",
            "product": "OpenShift Pipelines",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:openshift_pipelines:1"
            ],
            "defaultStatus": "unaffected",
            "packageName": "openshift-pipelines/pipelines-pipelines-as-code-watcher-rhel9",
            "product": "OpenShift Pipelines",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:openshift_pipelines:1"
            ],
            "defaultStatus": "unaffected",
            "packageName": "openshift-pipelines/pipelines-pipelines-as-code-webhook-rhel8",
            "product": "OpenShift Pipelines",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:openshift_pipelines:1"
            ],
            "defaultStatus": "unaffected",
            "packageName": "openshift-pipelines/pipelines-pipelines-as-code-webhook-rhel9",
            "product": "OpenShift Pipelines",
            "vendor": "Red Hat"
          }
        ],
        "datePublic": "2026-01-22T22:01:49.678Z",
        "descriptions": [
          {
            "lang": "en",
            "value": "An access control flaw has been discovered in Gitea. Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access."
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "namespace": "https://access.redhat.com/security/updates/classification/",
                "value": "Important"
              },
              "type": "Red Hat severity rating"
            }
          },
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
              "version": "3.1"
            },
            "format": "CVSS"
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-284",
                "description": "Improper Access Control",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-15T01:20:18.077Z",
          "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
          "shortName": "redhat-SADP"
        },
        "references": [
          {
            "tags": [
              "vdb-entry",
              "x_refsource_REDHAT"
            ],
            "url": "https://access.redhat.com/security/cve/CVE-2026-20736"
          },
          {
            "name": "RHBZ#2432205",
            "tags": [
              "issue-tracking",
              "x_refsource_REDHAT"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2432205"
          },
          {
            "tags": [
              "x_sadp-csaf-vex"
            ],
            "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20736.json"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-01-22T23:01:29.451Z",
            "value": "Reported to Red Hat."
          },
          {
            "lang": "en",
            "time": "2026-01-22T22:01:49.678Z",
            "value": "Made public."
          }
        ],
        "title": "gitea: Gitea Web Attachment Deletion: Cross-Repository Unauthorized Deletion via Missing Repo Ownership Check",
        "x_adpType": "supplier",
        "x_generator": {
          "engine": "sadp-cli 1.0.0"
        }
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Gitea Open Source Git Server",
          "vendor": "Gitea",
          "versions": [
            {
              "lessThanOrEqual": "1.25.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "spingARbor"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "CWE-284: Improper Access Control",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-22T22:01:49.678Z",
        "orgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
        "shortName": "Gitea"
      },
      "references": [
        {
          "name": "GitHub Security Advisory",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-jr6h-pwwp-c8g6"
        },
        {
          "name": "GitHub Pull Request #36320",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/go-gitea/gitea/pull/36320"
        },
        {
          "name": "Gitea v1.25.4 Release",
          "tags": [
            "release-notes"
          ],
          "url": "https://github.com/go-gitea/gitea/releases/tag/v1.25.4"
        },
        {
          "name": "Gitea v1.25.4 Release Blog Post",
          "tags": [
            "release-notes"
          ],
          "url": "https://blog.gitea.com/release-of-1.25.4/"
        }
      ],
      "title": "Gitea Web Attachment Deletion: Cross-Repository Unauthorized Deletion via Missing Repo Ownership Check"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
    "assignerShortName": "Gitea",
    "cveId": "CVE-2026-20736",
    "datePublished": "2026-01-22T22:01:49.678Z",
    "dateReserved": "2026-01-08T23:02:37.558Z",
    "dateUpdated": "2026-07-15T01:20:18.077Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-20736",
      "date": "2026-10-29",
      "epss": "0.00433",
      "percentile": "0.37553"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Gitea Open Source Git Server",
                "vendor": "Gitea",
                "versions": [
                  {
                    "lessThanOrEqual": "1.25.3",
                    "status": "affected",
                    "version": "0",
                    "versionType": "semver"
                  }
                ]
              }
            ],
            "source": "88ee5874-cf24-4952-aea0-31affedb7ff2"
          },
          {
            "affectedData": [
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:openshift_pipelines:1"
                ],
                "defaultStatus": "unaffected",
                "packageName": "openshift-pipelines/pipelines-opc-rhel9",
                "product": "OpenShift Pipelines",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:openshift_pipelines:1"
                ],
                "defaultStatus": "unaffected",
                "packageName": "openshift-pipelines/pipelines-pipelines-as-code-cli-rhel8",
                "product": "OpenShift Pipelines",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:openshift_pipelines:1"
                ],
                "defaultStatus": "unaffected",
                "packageName": "openshift-pipelines/pipelines-pipelines-as-code-cli-rhel9",
                "product": "OpenShift Pipelines",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:openshift_pipelines:1"
                ],
                "defaultStatus": "unaffected",
                "packageName": "openshift-pipelines/pipelines-pipelines-as-code-controller-rhel8",
                "product": "OpenShift Pipelines",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:openshift_pipelines:1"
                ],
                "defaultStatus": "unaffected",
                "packageName": "openshift-pipelines/pipelines-pipelines-as-code-controller-rhel9",
                "product": "OpenShift Pipelines",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:openshift_pipelines:1"
                ],
                "defaultStatus": "unaffected",
                "packageName": "openshift-pipelines/pipelines-pipelines-as-code-watcher-rhel8",
                "product": "OpenShift Pipelines",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:openshift_pipelines:1"
                ],
                "defaultStatus": "unaffected",
                "packageName": "openshift-pipelines/pipelines-pipelines-as-code-watcher-rhel9",
                "product": "OpenShift Pipelines",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:openshift_pipelines:1"
                ],
                "defaultStatus": "unaffected",
                "packageName": "openshift-pipelines/pipelines-pipelines-as-code-webhook-rhel8",
                "product": "OpenShift Pipelines",
                "vendor": "Red Hat"
              },
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:openshift_pipelines:1"
                ],
                "defaultStatus": "unaffected",
                "packageName": "openshift-pipelines/pipelines-pipelines-as-code-webhook-rhel9",
                "product": "OpenShift Pipelines",
                "vendor": "Red Hat"
              }
            ],
            "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:gitea:gitea:*:*:*:*:*:-:*:*",
                    "matchCriteriaId": "DFCB7D74-331D-4582-AB41-113A25BE8FAA",
                    "versionEndExcluding": "1.25.4",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access."
          },
          {
            "lang": "es",
            "value": "Gitea no verifica correctamente el contexto del repositorio al eliminar adjuntos. Un usuario que previamente subi\u00f3 un adjunto a un repositorio podr\u00eda eliminarlo despu\u00e9s de perder el acceso a ese repositorio al realizar la solicitud a trav\u00e9s de un repositorio diferente al que puede acceder."
          }
        ],
        "id": "CVE-2026-20736",
        "lastModified": "2026-07-15T02:18:23.973",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-20736",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "yes"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-23T21:13:08.431490Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-01-22T22:16:17.207",
        "references": [
          {
            "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
            "tags": [
              "Release Notes"
            ],
            "url": "https://blog.gitea.com/release-of-1.25.4/"
          },
          {
            "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
            "tags": [
              "Issue Tracking",
              "Patch"
            ],
            "url": "https://github.com/go-gitea/gitea/pull/36320"
          },
          {
            "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
            "tags": [
              "Release Notes"
            ],
            "url": "https://github.com/go-gitea/gitea/releases/tag/v1.25.4"
          },
          {
            "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
            "tags": [
              "Broken Link"
            ],
            "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-jr6h-pwwp-c8g6"
          },
          {
            "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
            "url": "https://access.redhat.com/security/cve/CVE-2026-20736"
          },
          {
            "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2432205"
          },
          {
            "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
            "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20736.json"
          }
        ],
        "sourceIdentifier": "88ee5874-cf24-4952-aea0-31affedb7ff2",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-284"
              }
            ],
            "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-284"
              }
            ],
            "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-06-30T04:14:27+00:00",
      "cve": "CVE-2026-20736",
      "id": "CVE-2026-20736",
      "initial_release_date": "2026-01-22T22:01:49.678000+00:00",
      "product_status:known_not_affected": "9",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "gitea: Gitea Web Attachment Deletion: Cross-Repository Unauthorized Deletion via Missing Repo Ownership Check",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20736.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "affected": [
              {
                "cpes": [
                  "cpe:/a:redhat:openshift_pipelines:1"
                ],
                "defaultStatus": "unaffected",
                "product": "OpenShift Pipelines",
                "vendor": "Red Hat"
              }
            ],
            "datePublic": "2026-01-22T22:01:49.678Z",
            "descriptions": [
              {
                "lang": "en",
                "value": "An access control flaw has been discovered in Gitea. Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access."
              }
            ],
            "metrics": [
              {
                "other": {
                  "content": {
                    "namespace": "https://access.redhat.com/security/updates/classification/",
                    "value": "Important"
                  },
                  "type": "Red Hat severity rating"
                }
              },
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "NETWORK",
                  "availabilityImpact": "NONE",
                  "baseScore": 7.5,
                  "baseSeverity": "HIGH",
                  "confidentialityImpact": "NONE",
                  "integrityImpact": "HIGH",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                  "version": "3.1"
                },
                "format": "CVSS"
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-284",
                    "description": "Improper Access Control",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-06-30T02:45:48.546Z",
              "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
              "shortName": "redhat-SADP"
            },
            "references": [
              {
                "tags": [
                  "vdb-entry",
                  "x_refsource_REDHAT"
                ],
                "url": "https://access.redhat.com/security/cve/CVE-2026-20736"
              },
              {
                "name": "RHBZ#2432205",
                "tags": [
                  "issue-tracking",
                  "x_refsource_REDHAT"
                ],
                "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2432205"
              },
              {
                "tags": [
                  "x_sadp-csaf-vex"
                ],
                "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20736.json"
              }
            ],
            "timeline": [
              {
                "lang": "en",
                "time": "2026-01-22T23:01:29.451Z",
                "value": "Reported to Red Hat."
              },
              {
                "lang": "en",
                "time": "2026-01-22T22:01:49.678Z",
                "value": "Made public."
              }
            ],
            "title": "gitea: Gitea Web Attachment Deletion: Cross-Repository Unauthorized Deletion via Missing Repo Ownership Check",
            "x_adpType": "supplier",
            "x_generator": {
              "engine": "sadp-cli 1.0.0"
            }
          },
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "NETWORK",
                  "availabilityImpact": "NONE",
                  "baseScore": 7.5,
                  "baseSeverity": "HIGH",
                  "confidentialityImpact": "NONE",
                  "integrityImpact": "HIGH",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-20736",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-01-23T21:13:08.431490Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-01-23T21:13:18.343Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Gitea Open Source Git Server",
              "vendor": "Gitea",
              "versions": [
                {
                  "lessThanOrEqual": "1.25.3",
                  "status": "affected",
                  "version": "0",
                  "versionType": "semver"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "reporter",
              "value": "spingARbor"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access."
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-284",
                  "description": "CWE-284: Improper Access Control",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-01-22T22:01:49.678Z",
            "orgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
            "shortName": "Gitea"
          },
          "references": [
            {
              "name": "GitHub Security Advisory",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-jr6h-pwwp-c8g6"
            },
            {
              "name": "GitHub Pull Request #36320",
              "tags": [
                "patch"
              ],
              "url": "https://github.com/go-gitea/gitea/pull/36320"
            },
            {
              "name": "Gitea v1.25.4 Release",
              "tags": [
                "release-notes"
              ],
              "url": "https://github.com/go-gitea/gitea/releases/tag/v1.25.4"
            },
            {
              "name": "Gitea v1.25.4 Release Blog Post",
              "tags": [
                "release-notes"
              ],
              "url": "https://blog.gitea.com/release-of-1.25.4/"
            }
          ],
          "title": "Gitea Web Attachment Deletion: Cross-Repository Unauthorized Deletion via Missing Repo Ownership Check"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
        "assignerShortName": "Gitea",
        "cveId": "CVE-2026-20736",
        "datePublished": "2026-01-22T22:01:49.678Z",
        "dateReserved": "2026-01-08T23:02:37.558Z",
        "dateUpdated": "2026-06-30T02:45:48.546Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

bit-gitea-2026-20736

Vulnerability from bitnami_vulndb

Published

2026-01-30 08:40

Modified

2026-09-08 08:34

Summary

Gitea Web Attachment Deletion: Cross-Repository Unauthorized Deletion via Missing Repo Ownership Check

Details

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "gitea",
        "purl": "pkg:bitnami/gitea"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.25.4"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-20736"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:gitea:gitea:*:*:*:*:*:-:*:*"
    ],
    "severity": "High"
  },
  "details": "Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access.",
  "id": "BIT-gitea-2026-20736",
  "modified": "2026-09-08T08:34:36.952Z",
  "published": "2026-01-30T08:40:35.702Z",
  "references": [
    {
      "type": "ARTICLE",
      "url": "https://blog.gitea.com/release-of-1.25.4/"
    },
    {
      "type": "FIX",
      "url": "https://github.com/go-gitea/gitea/pull/36320"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/go-gitea/gitea/releases/tag/v1.25.4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-jr6h-pwwp-c8g6"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20736"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-20736"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2432205"
    },
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20736.json"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Gitea Web Attachment Deletion: Cross-Repository Unauthorized Deletion via Missing Repo Ownership Check"
}

FKIE_CVE-2026-20736

Vulnerability from fkie_nvd - Published: 2026-01-22 22:16 - Updated: 2026-07-15 02:18

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Summary

References

URL	Tags
88ee5874-cf24-4952-aea0-31affedb7ff2	https://blog.gitea.com/release-of-1.25.4/	Release Notes
88ee5874-cf24-4952-aea0-31affedb7ff2	https://github.com/go-gitea/gitea/pull/36320	Issue Tracking, Patch
88ee5874-cf24-4952-aea0-31affedb7ff2	https://github.com/go-gitea/gitea/releases/tag/v1.25.4	Release Notes
88ee5874-cf24-4952-aea0-31affedb7ff2	https://github.com/go-gitea/gitea/security/advisories/GHSA-jr6h-pwwp-c8g6	Broken Link
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/security/cve/CVE-2026-20736
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://bugzilla.redhat.com/show_bug.cgi?id=2432205
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20736.json

Impacted products

	Vendor	Product	Version
	gitea	gitea	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Gitea Open Source Git Server",
          "vendor": "Gitea",
          "versions": [
            {
              "lessThanOrEqual": "1.25.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2"
    },
    {
      "affectedData": [
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_pipelines:1"
          ],
          "defaultStatus": "unaffected",
          "packageName": "openshift-pipelines/pipelines-opc-rhel9",
          "product": "OpenShift Pipelines",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_pipelines:1"
          ],
          "defaultStatus": "unaffected",
          "packageName": "openshift-pipelines/pipelines-pipelines-as-code-cli-rhel8",
          "product": "OpenShift Pipelines",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_pipelines:1"
          ],
          "defaultStatus": "unaffected",
          "packageName": "openshift-pipelines/pipelines-pipelines-as-code-cli-rhel9",
          "product": "OpenShift Pipelines",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_pipelines:1"
          ],
          "defaultStatus": "unaffected",
          "packageName": "openshift-pipelines/pipelines-pipelines-as-code-controller-rhel8",
          "product": "OpenShift Pipelines",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_pipelines:1"
          ],
          "defaultStatus": "unaffected",
          "packageName": "openshift-pipelines/pipelines-pipelines-as-code-controller-rhel9",
          "product": "OpenShift Pipelines",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_pipelines:1"
          ],
          "defaultStatus": "unaffected",
          "packageName": "openshift-pipelines/pipelines-pipelines-as-code-watcher-rhel8",
          "product": "OpenShift Pipelines",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_pipelines:1"
          ],
          "defaultStatus": "unaffected",
          "packageName": "openshift-pipelines/pipelines-pipelines-as-code-watcher-rhel9",
          "product": "OpenShift Pipelines",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_pipelines:1"
          ],
          "defaultStatus": "unaffected",
          "packageName": "openshift-pipelines/pipelines-pipelines-as-code-webhook-rhel8",
          "product": "OpenShift Pipelines",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:openshift_pipelines:1"
          ],
          "defaultStatus": "unaffected",
          "packageName": "openshift-pipelines/pipelines-pipelines-as-code-webhook-rhel9",
          "product": "OpenShift Pipelines",
          "vendor": "Red Hat"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gitea:gitea:*:*:*:*:*:-:*:*",
              "matchCriteriaId": "DFCB7D74-331D-4582-AB41-113A25BE8FAA",
              "versionEndExcluding": "1.25.4",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access."
    },
    {
      "lang": "es",
      "value": "Gitea no verifica correctamente el contexto del repositorio al eliminar adjuntos. Un usuario que previamente subi\u00f3 un adjunto a un repositorio podr\u00eda eliminarlo despu\u00e9s de perder el acceso a ese repositorio al realizar la solicitud a trav\u00e9s de un repositorio diferente al que puede acceder."
    }
  ],
  "id": "CVE-2026-20736",
  "lastModified": "2026-07-15T02:18:23.973",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-20736",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-01-23T21:13:08.431490Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-01-22T22:16:17.207",
  "references": [
    {
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
      "tags": [
        "Release Notes"
      ],
      "url": "https://blog.gitea.com/release-of-1.25.4/"
    },
    {
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "url": "https://github.com/go-gitea/gitea/pull/36320"
    },
    {
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/go-gitea/gitea/releases/tag/v1.25.4"
    },
    {
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
      "tags": [
        "Broken Link"
      ],
      "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-jr6h-pwwp-c8g6"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/security/cve/CVE-2026-20736"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2432205"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20736.json"
    }
  ],
  "sourceIdentifier": "88ee5874-cf24-4952-aea0-31affedb7ff2",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ],
      "source": "88ee5874-cf24-4952-aea0-31affedb7ff2",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "type": "Secondary"
    }
  ]
}

GHSA-HGR3-X44X-33HX

Vulnerability from github – Published: 2026-01-23 00:31 – Updated: 2026-01-23 20:11

Summary

Gitea has improper access control for uploaded attachments

Details

Severity

2.3 (Low)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "code.gitea.io/gitea"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.25.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-20736"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-284"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-01-23T20:11:37Z",
    "nvd_published_at": "2026-01-22T22:16:17Z",
    "severity": "LOW"
  },
  "details": "Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access.",
  "id": "GHSA-hgr3-x44x-33hx",
  "modified": "2026-01-23T20:11:37Z",
  "published": "2026-01-23T00:31:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20736"
    },
    {
      "type": "WEB",
      "url": "https://github.com/go-gitea/gitea/pull/36320"
    },
    {
      "type": "WEB",
      "url": "https://github.com/go-gitea/gitea/commit/fbea2c68e8df11cfa94e8ead913b79946780ed30"
    },
    {
      "type": "WEB",
      "url": "https://blog.gitea.com/release-of-1.25.4"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/go-gitea/gitea"
    },
    {
      "type": "WEB",
      "url": "https://github.com/go-gitea/gitea/releases/tag/v1.25.4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Gitea has improper access control for uploaded attachments"
}

WID-SEC-W-2026-0200

Vulnerability from csaf_certbund - Published: 2026-01-22 23:00 - Updated: 2026-02-08 23:00

Summary

Gitea: Mehrere Schwachstellen

Severity

Hoch

Scope

9 vulnerabilities in this advisory, including CVE-2026-20736.

CVE-2026-20736

Known affected: 2 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-20736 (GCVE-0-2026-20736)

bit-gitea-2026-20736

Vulnerability from bitnami_vulndb

FKIE_CVE-2026-20736

GHSA-HGR3-X44X-33HX

WID-SEC-W-2026-0200

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour