Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2026-01-30 08:40

Modified

2026-09-08 08:34

Summary

Gitea Stopwatch API Missing Authorization Check Leads to Post-Revocation Information Disclosure

Details

Gitea's stopwatch API does not re-validate repository access permissions. After a user's access to a private repository is revoked, they may still view issue titles and repository names through previously started stopwatches.

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:L/UI:N/S:U/C:H/I:N/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-20883"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:gitea:gitea:*:*:*:*:*:-:*:*"
    ],
    "severity": "Medium"
  },
  "details": "Gitea\u0027s stopwatch API does not re-validate repository access permissions. After a user\u0027s access to a private repository is revoked, they may still view issue titles and repository names through previously started stopwatches.",
  "id": "BIT-gitea-2026-20883",
  "modified": "2026-09-08T08:34:36.952Z",
  "published": "2026-01-30T08:40:41.879Z",
  "references": [
    {
      "type": "ARTICLE",
      "url": "https://blog.gitea.com/release-of-1.25.4/"
    },
    {
      "type": "FIX",
      "url": "https://github.com/go-gitea/gitea/pull/36340"
    },
    {
      "type": "FIX",
      "url": "https://github.com/go-gitea/gitea/pull/36368"
    },
    {
      "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-644v-xv3j-xgqg"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20883"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Gitea Stopwatch API Missing Authorization Check Leads to Post-Revocation Information Disclosure"
}

CVE-2026-20883 (GCVE-0-2026-20883)

Vulnerability from cvelistv5 – Published: 2026-01-22 22:01 – Updated: 2026-01-23 21:54

Title

Gitea Stopwatch API Missing Authorization Check Leads to Post-Revocation Information Disclosure

Summary

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-23 21:11 UTC

CWE

CWE-284 - Improper Access Control

Assigner

Gitea mitre root

References

5 references

URL	Tags
https://github.com/go-gitea/gitea/security/adviso…	vendor-advisory
https://github.com/go-gitea/gitea/pull/36340	patch
https://github.com/go-gitea/gitea/pull/36368	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

Impacted products

1 product

Vendor	Product	Version
Gitea	Gitea Open Source Git Server	Affected: 0 , ≤ 1.25.3 (semver)

Credits

spingARbor

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-20883",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-23T21:11:00.973092Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-23T21:54:21.705Z",
          "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\u0027s stopwatch API does not re-validate repository access permissions. After a user\u0027s access to a private repository is revoked, they may still view issue titles and repository names through previously started stopwatches."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "CWE-284: Improper Access Control",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-22T22:01:50.840Z",
        "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-644v-xv3j-xgqg"
        },
        {
          "name": "GitHub Pull Request #36340",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/go-gitea/gitea/pull/36340"
        },
        {
          "name": "GitHub Pull Request #36368",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/go-gitea/gitea/pull/36368"
        },
        {
          "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 Stopwatch API Missing Authorization Check Leads to Post-Revocation Information Disclosure"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
    "assignerShortName": "Gitea",
    "cveId": "CVE-2026-20883",
    "datePublished": "2026-01-22T22:01:50.840Z",
    "dateReserved": "2026-01-08T23:02:37.553Z",
    "dateUpdated": "2026-01-23T21:54:21.705Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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.