GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2021-29622 (GCVE-0-2021-29622)

Vulnerability from cvelistv5 – Published: 2021-05-19 20:00 – Updated: 2024-08-03 22:11
VLAI
Title
Arbitrary redirects under /new endpoint
Summary
Prometheus is an open-source monitoring system and time series database. In 2.23.0, Prometheus changed its default UI to the New ui. To ensure a seamless transition, the URL's prefixed by /new redirect to /. Due to a bug in the code, it is possible for an attacker to craft an URL that can redirect to any other URL, in the /new endpoint. If a user visits a prometheus server with a specially crafted address, they can be redirected to an arbitrary URL. The issue was patched in the 2.26.1 and 2.27.1 releases. In 2.28.0, the /new endpoint will be removed completely. The workaround is to disable access to /new via a reverse proxy in front of Prometheus.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CWE
  • CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
Impacted products
Vendor Product Version CPE status
prometheus prometheus Affected: >= 2.23.0, < 2.27.1
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T22:11:06.291Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/prometheus/prometheus/security/advisories/GHSA-vx57-7f4q-fpc7"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/prometheus/prometheus/releases/tag/v2.26.1"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/prometheus/prometheus/releases/tag/v2.27.1"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "prometheus",
          "vendor": "prometheus",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.23.0, \u003c 2.27.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Prometheus is an open-source monitoring system and time series database. In 2.23.0, Prometheus changed its default UI to the New ui. To ensure a seamless transition, the URL\u0027s prefixed by /new redirect to /. Due to a bug in the code, it is possible for an attacker to craft an URL that can redirect to any other URL, in the /new endpoint. If a user visits a prometheus server with a specially crafted address, they can be redirected to an arbitrary URL. The issue was patched in the 2.26.1 and 2.27.1 releases. In 2.28.0, the /new endpoint will be removed completely. The workaround is to disable access to /new via a reverse proxy in front of Prometheus."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-601",
              "description": "CWE-601: URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-05-19T20:00:12.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/prometheus/prometheus/security/advisories/GHSA-vx57-7f4q-fpc7"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/prometheus/prometheus/releases/tag/v2.26.1"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/prometheus/prometheus/releases/tag/v2.27.1"
        }
      ],
      "source": {
        "advisory": "GHSA-vx57-7f4q-fpc7",
        "discovery": "UNKNOWN"
      },
      "title": "Arbitrary redirects under /new endpoint",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-29622",
          "STATE": "PUBLIC",
          "TITLE": "Arbitrary redirects under /new endpoint"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "prometheus",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003e= 2.23.0, \u003c 2.27.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "prometheus"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Prometheus is an open-source monitoring system and time series database. In 2.23.0, Prometheus changed its default UI to the New ui. To ensure a seamless transition, the URL\u0027s prefixed by /new redirect to /. Due to a bug in the code, it is possible for an attacker to craft an URL that can redirect to any other URL, in the /new endpoint. If a user visits a prometheus server with a specially crafted address, they can be redirected to an arbitrary URL. The issue was patched in the 2.26.1 and 2.27.1 releases. In 2.28.0, the /new endpoint will be removed completely. The workaround is to disable access to /new via a reverse proxy in front of Prometheus."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-601: URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/prometheus/prometheus/security/advisories/GHSA-vx57-7f4q-fpc7",
              "refsource": "CONFIRM",
              "url": "https://github.com/prometheus/prometheus/security/advisories/GHSA-vx57-7f4q-fpc7"
            },
            {
              "name": "https://github.com/prometheus/prometheus/releases/tag/v2.26.1",
              "refsource": "MISC",
              "url": "https://github.com/prometheus/prometheus/releases/tag/v2.26.1"
            },
            {
              "name": "https://github.com/prometheus/prometheus/releases/tag/v2.27.1",
              "refsource": "MISC",
              "url": "https://github.com/prometheus/prometheus/releases/tag/v2.27.1"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-vx57-7f4q-fpc7",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-29622",
    "datePublished": "2021-05-19T20:00:13.000Z",
    "dateReserved": "2021-03-30T00:00:00.000Z",
    "dateUpdated": "2024-08-03T22:11:06.291Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-29622",
      "date": "2026-09-20",
      "epss": "0.1956",
      "percentile": "0.97258"
    },
    "microsoft_vex": {
      "current_release_date": "2021-12-16T00:00:00.000Z",
      "cve": "CVE-2021-29622",
      "id": "msrc_CVE-2021-29622",
      "initial_release_date": "2021-05-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "Arbitrary redirects under /new endpoint",
      "url": "https://msrc.microsoft.com/csaf/vex/2021/msrc_cve-2021-29622.json",
      "version": "1"
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:prometheus:prometheus:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "2A93B617-8482-4109-8C83-A06AC85D74F8",
                    "versionEndExcluding": "2.26.1",
                    "versionStartIncluding": "2.23.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:prometheus:prometheus:2.27.0:-:*:*:*:*:*:*",
                    "matchCriteriaId": "B1E1B501-8DA3-46E7-A4B4-B30A9E2C3335",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:prometheus:prometheus:2.27.0:rc0:*:*:*:*:*:*",
                    "matchCriteriaId": "F4251CCD-DFC2-4571-8448-319882AAAB08",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Prometheus is an open-source monitoring system and time series database. In 2.23.0, Prometheus changed its default UI to the New ui. To ensure a seamless transition, the URL\u0027s prefixed by /new redirect to /. Due to a bug in the code, it is possible for an attacker to craft an URL that can redirect to any other URL, in the /new endpoint. If a user visits a prometheus server with a specially crafted address, they can be redirected to an arbitrary URL. The issue was patched in the 2.26.1 and 2.27.1 releases. In 2.28.0, the /new endpoint will be removed completely. The workaround is to disable access to /new via a reverse proxy in front of Prometheus."
          },
          {
            "lang": "es",
            "value": "Prometheus es un sistema de monitoreo de c\u00f3digo abierto y una base de datos de series de tiempo.\u0026#xa0;En la versi\u00f3n 2.23.0, Prometheus cambi\u00f3 su Interfaz de Usuario predeterminada a la Nueva interfaz de usuario.\u0026#xa0;Para garantizar una transici\u00f3n sin problemas, la URL con el prefijo /new redirecciona a /.\u0026#xa0;Debido a un bug en el c\u00f3digo, es posible para un atacante dise\u00f1ar una URL que pueda redireccionar a cualquier otra URL, en el endpoint /new.\u0026#xa0;Si un usuario visita un servidor de Prometheus con una direcci\u00f3n especialmente dise\u00f1ada, ellos pueden ser redirigidos a una URL arbitraria.\u0026#xa0;El problema fue parcheado en las versiones 2.26.1 y 2.27.1.\u0026#xa0;En la versi\u00f3n 2.28.0, el endpoint /new ser\u00e1 eliminado completamente.\u0026#xa0;La soluci\u00f3n es deshabilitar un acceso a /new por medio de un proxy inverso en frente de Prometheus"
          }
        ],
        "id": "CVE-2021-29622",
        "lastModified": "2024-11-21T06:01:30.877",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 5.8,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 8.6,
              "impactScore": 4.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": true
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 6.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 3.6,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 6.1,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 2.7,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2021-05-19T20:15:07.487",
        "references": [
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://github.com/prometheus/prometheus/releases/tag/v2.26.1"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://github.com/prometheus/prometheus/releases/tag/v2.27.1"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://github.com/prometheus/prometheus/security/advisories/GHSA-vx57-7f4q-fpc7"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://github.com/prometheus/prometheus/releases/tag/v2.26.1"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://github.com/prometheus/prometheus/releases/tag/v2.27.1"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://github.com/prometheus/prometheus/security/advisories/GHSA-vx57-7f4q-fpc7"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-601"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-14T07:00:55+00:00",
      "cve": "CVE-2021-29622",
      "id": "CVE-2021-29622",
      "initial_release_date": "2021-05-18T00:00:00+00:00",
      "product_status:fixed": "3",
      "product_status:known_not_affected": "387",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "prometheus: open redirect under the /new endpoint",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-29622.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.