CVE-2026-27771 (GCVE-0-2026-27771)

Vulnerability from cvelistv5 – Published: 2026-07-03 20:19 – Updated: 2026-07-03 20:19
VLAI
Title
Gitea Composer package source links use insufficient permission checks
Summary
Gitea versions up to and including 1.26.1 have insufficient permission checks for Composer package source links, which can expose private or internal package source information.
Severity
8.2 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
CWE
Assigner
References
Impacted products
Vendor Product Version
Gitea Gitea Open Source Git Server Affected: 0 , ≤ 1.26.1 (semver)
Create a notification for this product.
Credits
DevNoScope
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Gitea Open Source Git Server",
          "vendor": "Gitea",
          "versions": [
            {
              "lessThanOrEqual": "1.26.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "DevNoScope"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Gitea versions up to and including 1.26.1 have insufficient permission checks for Composer package source links, which can expose private or internal package source information."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-03T20:19:36.924Z",
        "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-8qw8-rq86-9pc2"
        },
        {
          "name": "GitHub Pull Request #37610",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/go-gitea/gitea/pull/37610"
        },
        {
          "name": "Gitea v1.26.2 Release",
          "tags": [
            "release-notes"
          ],
          "url": "https://github.com/go-gitea/gitea/releases/tag/v1.26.2"
        },
        {
          "name": "Gitea v1.26.2 Release Blog Post",
          "tags": [
            "release-notes"
          ],
          "url": "https://blog.gitea.com/release-of-1.26.2/"
        }
      ],
      "title": "Gitea Composer package source links use insufficient permission checks",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
    "assignerShortName": "Gitea",
    "cveId": "CVE-2026-27771",
    "datePublished": "2026-07-03T20:19:36.924Z",
    "dateReserved": "2026-03-03T03:25:50.291Z",
    "dateUpdated": "2026-07-03T20:19:36.924Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-27771",
      "date": "2026-07-04",
      "epss": "0.40738",
      "percentile": "0.9848"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-27771\",\"sourceIdentifier\":\"88ee5874-cf24-4952-aea0-31affedb7ff2\",\"published\":\"2026-07-03T21:16:59.043\",\"lastModified\":\"2026-07-03T21:16:59.043\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Gitea versions up to and including 1.26.1 have insufficient permission checks for Composer package source links, which can expose private or internal package source information.\"}],\"affected\":[{\"source\":\"88ee5874-cf24-4952-aea0-31affedb7ff2\",\"affectedData\":[{\"vendor\":\"Gitea\",\"product\":\"Gitea Open Source Git Server\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThanOrEqual\":\"1.26.1\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"88ee5874-cf24-4952-aea0-31affedb7ff2\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N\",\"baseScore\":8.2,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":4.2}]},\"weaknesses\":[{\"source\":\"88ee5874-cf24-4952-aea0-31affedb7ff2\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-862\"}]}],\"references\":[{\"url\":\"https://blog.gitea.com/release-of-1.26.2/\",\"source\":\"88ee5874-cf24-4952-aea0-31affedb7ff2\"},{\"url\":\"https://github.com/go-gitea/gitea/pull/37610\",\"source\":\"88ee5874-cf24-4952-aea0-31affedb7ff2\"},{\"url\":\"https://github.com/go-gitea/gitea/releases/tag/v1.26.2\",\"source\":\"88ee5874-cf24-4952-aea0-31affedb7ff2\"},{\"url\":\"https://github.com/go-gitea/gitea/security/advisories/GHSA-8qw8-rq86-9pc2\",\"source\":\"88ee5874-cf24-4952-aea0-31affedb7ff2\"}]}}"
  }
}


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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.