CVE-2025-59538 (GCVE-0-2025-59538)

Vulnerability from cvelistv5 – Published: 2025-10-01 21:09 – Updated: 2025-10-02 15:54
VLAI
Title
Argo CD is Vulnerable to Unauthenticated Remote DoS via malformed Azure DevOps git.push webhook
Summary
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. For versions 2.9.0-rc1 through 2.14.19, 3.0.0-rc1 through 3.2.0-rc1, 3.1.6 and 3.0.17, when the webhook.azuredevops.username and webhook.azuredevops.password are not set in the default configuration, the /api/webhook endpoint crashes the entire argocd-server process when it receives an Azure DevOps Push event whose JSON array resource.refUpdates is empty. The slice index [0] is accessed without a length check, causing an index-out-of-range panic. A single unauthenticated HTTP POST is enough to kill the process. This issue is resolved in versions 2.14.20, 3.2.0-rc2, 3.1.8 and 3.0.19.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-02 15:32 UTC
CWE
  • CWE-248 - Uncaught Exception
  • CWE-703 - Improper Check or Handling of Exceptional Conditions
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7798 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
argoproj argo-cd Affected: >= 2.9.0-rc1, < 2.14.20
Affected: >= 3.2.0-rc1, < 3.2.0-rc2
Affected: >= 3.1.0-rc1, < 3.1.8
Affected: >= 3.0.0-rc1, < 3.0.19
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-59538",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-02T15:32:22.380180Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-02T15:54:11.490Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "argo-cd",
          "vendor": "argoproj",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.9.0-rc1, \u003c 2.14.20"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.2.0-rc1, \u003c 3.2.0-rc2"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.1.0-rc1, \u003c 3.1.8"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.0.0-rc1, \u003c 3.0.19"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. For versions 2.9.0-rc1 through 2.14.19, 3.0.0-rc1 through 3.2.0-rc1, 3.1.6 and 3.0.17, when the webhook.azuredevops.username and webhook.azuredevops.password are not set in the default configuration, the /api/webhook endpoint crashes the entire argocd-server process when it receives an Azure DevOps Push event whose JSON array resource.refUpdates is empty. The slice index [0] is accessed without a length check, causing an index-out-of-range panic. A single unauthenticated HTTP POST is enough to kill the process. This issue is resolved in versions 2.14.20, 3.2.0-rc2, 3.1.8 and 3.0.19."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-248",
              "description": "CWE-248: Uncaught Exception",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-703",
              "description": "CWE-703: Improper Check or Handling of Exceptional Conditions",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-01T21:09:08.870Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv"
        },
        {
          "name": "https://github.com/argoproj/argo-cd/commit/1a023f1ca7fe4ec942b4b6696804988d5a632baf",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/argoproj/argo-cd/commit/1a023f1ca7fe4ec942b4b6696804988d5a632baf"
        }
      ],
      "source": {
        "advisory": "GHSA-gpx4-37g2-c8pv",
        "discovery": "UNKNOWN"
      },
      "title": "Argo CD is Vulnerable to Unauthenticated Remote DoS via malformed Azure DevOps git.push webhook"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-59538",
    "datePublished": "2025-10-01T21:09:08.870Z",
    "dateReserved": "2025-09-17T17:04:20.373Z",
    "dateUpdated": "2025-10-02T15:54:11.490Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-59538",
      "date": "2026-11-10",
      "epss": "0.10595",
      "percentile": "0.95822"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "argo-cd",
                "vendor": "argoproj",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003e= 2.9.0-rc1, \u003c 2.14.20"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 3.2.0-rc1, \u003c 3.2.0-rc2"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 3.1.0-rc1, \u003c 3.1.8"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 3.0.0-rc1, \u003c 3.0.19"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "3811C238-65B6-4B66-A82C-112ED72F66C9",
                    "versionEndExcluding": "2.14.20",
                    "versionStartIncluding": "2.9.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E7FEAEBF-40B8-40E4-B34B-2785B0FEAFEB",
                    "versionEndExcluding": "3.0.19",
                    "versionStartIncluding": "3.0.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "AFF4E847-D3D6-457A-A47B-98799D28E20E",
                    "versionEndExcluding": "3.1.8",
                    "versionStartIncluding": "3.1.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:argoproj:argo_cd:3.2.0:rc1:*:*:*:*:*:*",
                    "matchCriteriaId": "247C0721-E494-4732-BF53-F249C574A702",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. For versions 2.9.0-rc1 through 2.14.19, 3.0.0-rc1 through 3.2.0-rc1, 3.1.6 and 3.0.17, when the webhook.azuredevops.username and webhook.azuredevops.password are not set in the default configuration, the /api/webhook endpoint crashes the entire argocd-server process when it receives an Azure DevOps Push event whose JSON array resource.refUpdates is empty. The slice index [0] is accessed without a length check, causing an index-out-of-range panic. A single unauthenticated HTTP POST is enough to kill the process. This issue is resolved in versions 2.14.20, 3.2.0-rc2, 3.1.8 and 3.0.19."
          },
          {
            "lang": "es",
            "value": "Argo CD es una herramienta de entrega continua declarativa, GitOps para Kubernetes. Para las versiones 2.9.0-rc1 hasta 2.14.19, 3.0.0-rc1 hasta 3.2.0-rc1, 3.1.6 y 3.0.17, cuando webhook.azuredevops.username y webhook.azuredevops.password no est\u00e1n configurados en la configuraci\u00f3n predeterminada, el endpoint /API/webhook bloquea todo el proceso argocd-servidor cuando recibe un evento Push de Azure DevOps cuyo array JSON resource.refUpdates est\u00e1 vac\u00edo. Se accede al \u00edndice de la porci\u00f3n [0] sin una verificaci\u00f3n de longitud, lo que provoca un p\u00e1nico por \u00edndice fuera de rango. Una \u00fanica solicitud HTTP POST no autenticada es suficiente para terminar el proceso. Este problema se resuelve en las versiones 2.14.20, 3.2.0-rc2, 3.1.8 y 3.0.19."
          }
        ],
        "id": "CVE-2025-59538",
        "lastModified": "2026-10-12T15:10:00.207",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2025-59538",
                "options": [
                  {
                    "exploitation": "poc"
                  },
                  {
                    "automatable": "yes"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-02T15:32:22.380180Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2025-10-01T21:16:43.800",
        "references": [
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Patch"
            ],
            "url": "https://github.com/argoproj/argo-cd/commit/1a023f1ca7fe4ec942b4b6696804988d5a632baf"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Exploit",
              "Vendor Advisory"
            ],
            "url": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv"
          },
          {
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "tags": [
              "Exploit",
              "Vendor Advisory"
            ],
            "url": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-248"
              },
              {
                "lang": "en",
                "value": "CWE-703"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-27T04:39:45+00:00",
      "cve": "CVE-2025-59538",
      "id": "CVE-2025-59538",
      "initial_release_date": "2025-10-01T21:09:08.870000+00:00",
      "product_status:fixed": "31",
      "product_status:known_affected": "4",
      "product_status:known_not_affected": "93",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "github.com/argoproj/argo-cd: Argo CD unauthenticated Remote Denial of Service",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-59538.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2025-59538",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-10-02T15:32:22.380180Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-10-02T15:32:30.951Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "exploit"
                ],
                "url": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "argo-cd",
              "vendor": "argoproj",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003e= 2.9.0-rc1, \u003c 2.14.20"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 3.2.0-rc1, \u003c 3.2.0-rc2"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 3.1.0-rc1, \u003c 3.1.8"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 3.0.0-rc1, \u003c 3.0.19"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. For versions 2.9.0-rc1 through 2.14.19, 3.0.0-rc1 through 3.2.0-rc1, 3.1.6 and 3.0.17, when the webhook.azuredevops.username and webhook.azuredevops.password are not set in the default configuration, the /api/webhook endpoint crashes the entire argocd-server process when it receives an Azure DevOps Push event whose JSON array resource.refUpdates is empty. The slice index [0] is accessed without a length check, causing an index-out-of-range panic. A single unauthenticated HTTP POST is enough to kill the process. This issue is resolved in versions 2.14.20, 3.2.0-rc2, 3.1.8 and 3.0.19."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-248",
                  "description": "CWE-248: Uncaught Exception",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            },
            {
              "descriptions": [
                {
                  "cweId": "CWE-703",
                  "description": "CWE-703: Improper Check or Handling of Exceptional Conditions",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-10-01T21:09:08.870Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv"
            },
            {
              "name": "https://github.com/argoproj/argo-cd/commit/1a023f1ca7fe4ec942b4b6696804988d5a632baf",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/argoproj/argo-cd/commit/1a023f1ca7fe4ec942b4b6696804988d5a632baf"
            }
          ],
          "source": {
            "advisory": "GHSA-gpx4-37g2-c8pv",
            "discovery": "UNKNOWN"
          },
          "title": "Argo CD is Vulnerable to Unauthenticated Remote DoS via malformed Azure DevOps git.push webhook"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2025-59538",
        "datePublished": "2025-10-01T21:09:08.870Z",
        "dateReserved": "2025-09-17T17:04:20.373Z",
        "dateUpdated": "2025-10-02T15:54:11.490Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    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.