CVE-2026-118386

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-118386", "assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2", "state": "PUBLISHED", "assignerShortName": "Gitea", "dateReserved": "2026-11-01T08:48:41.145Z", "datePublished": "2026-11-01T09:47:07.487Z", "dateUpdated": "2026-11-06T15:44:56.287Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "88ee5874-cf24-4952-aea0-31affedb7ff2", "shortName": "Gitea", "dateUpdated": "2026-11-01T09:47:07.487Z"}, "title": "Gitea Actions fork workflow trust through pull request review commit", "descriptions": [{"lang": "en", "value": "Workflows triggered by a pull request review were read from the commit named in the review's `commit_id`, while the fork restrictions were decided by the reviewed pull request, and the commit was not checked to belong to that pull request. A user with read access to a repository could place a commit of their own in it, through a fork pull request or an AGit push, and submit a review naming that commit on a pull request whose head branch is in the same repository. On instances with a runner serving the repository, the attacker's workflow then ran without approval, received the Actions secrets of the repository and its owner, and got a `GITEA_TOKEN` with write access to the repository. Review-triggered workflows now run on the pull request head."}], "affected": [{"vendor": "Gitea", "product": "Gitea", "packageName": "gitea.dev", "defaultStatus": "unaffected", "versions": [{"version": "1.19.0", "status": "affected", "lessThan": "28.3.0", "versionType": "semver"}]}], "references": [{"url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-32h8-5xqg-h466", "name": "GitHub Security Advisory GHSA-32h8-5xqg-h466", "tags": ["vendor-advisory"]}, {"url": "https://github.com/go-gitea/gitea/pull/40099", "name": "Fix: go-gitea/gitea pull request #40099", "tags": ["patch"]}, {"url": "https://github.com/go-gitea/gitea/pull/40117", "name": "Fix backport to release/v28: go-gitea/gitea pull request #40117", "tags": ["patch"]}, {"url": "https://blog.gitea.com/release-of-28.3.0/", "name": "Gitea 28.3.0 release announcement", "tags": ["release-notes"]}, {"url": "https://github.com/go-gitea/gitea/releases/tag/v28.3.0", "name": "go-gitea/gitea v28.3.0 release", "tags": ["release-notes"]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-863", "description": "CWE-863: Incorrect Authorization"}]}], "credits": [{"lang": "en", "value": "https://github.com/silverwind", "type": "remediation developer"}, {"lang": "en", "value": "https://github.com/bircni", "type": "remediation reviewer"}, {"lang": "en", "value": "https://github.com/wxiaoguang", "type": "remediation reviewer"}]}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-11-06T15:44:31.233331Z", "id": "CVE-2026-118386", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T15:44:56.287Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-118386", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T15:44:31.233331Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T15:44:50.720Z"}}], "cna": {"title": "Gitea Actions fork workflow trust through pull request review commit", "credits": [{"lang": "en", "type": "remediation developer", "value": "https://github.com/silverwind"}, {"lang": "en", "type": "remediation reviewer", "value": "https://github.com/bircni"}, {"lang": "en", "type": "remediation reviewer", "value": "https://github.com/wxiaoguang"}], "affected": [{"vendor": "Gitea", "product": "Gitea", "versions": [{"status": "affected", "version": "1.19.0", "lessThan": "28.3.0", "versionType": "semver"}], "packageName": "gitea.dev", "defaultStatus": "unaffected"}], "references": [{"url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-32h8-5xqg-h466", "name": "GitHub Security Advisory GHSA-32h8-5xqg-h466", "tags": ["vendor-advisory"]}, {"url": "https://github.com/go-gitea/gitea/pull/40099", "name": "Fix: go-gitea/gitea pull request #40099", "tags": ["patch"]}, {"url": "https://github.com/go-gitea/gitea/pull/40117", "name": "Fix backport to release/v28: go-gitea/gitea pull request #40117", "tags": ["patch"]}, {"url": "https://blog.gitea.com/release-of-28.3.0/", "name": "Gitea 28.3.0 release announcement", "tags": ["release-notes"]}, {"url": "https://github.com/go-gitea/gitea/releases/tag/v28.3.0", "name": "go-gitea/gitea v28.3.0 release", "tags": ["release-notes"]}], "descriptions": [{"lang": "en", "value": "Workflows triggered by a pull request review were read from the commit named in the review's `commit_id`, while the fork restrictions were decided by the reviewed pull request, and the commit was not checked to belong to that pull request. A user with read access to a repository could place a commit of their own in it, through a fork pull request or an AGit push, and submit a review naming that commit on a pull request whose head branch is in the same repository. On instances with a runner serving the repository, the attacker's workflow then ran without approval, received the Actions secrets of the repository and its owner, and got a `GITEA_TOKEN` with write access to the repository. Review-triggered workflows now run on the pull request head."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-863", "description": "CWE-863: Incorrect Authorization"}]}], "providerMetadata": {"orgId": "88ee5874-cf24-4952-aea0-31affedb7ff2", "shortName": "Gitea", "dateUpdated": "2026-11-01T09:47:07.487Z"}}}, "cveMetadata": {"cveId": "CVE-2026-118386", "state": "PUBLISHED", "dateUpdated": "2026-11-06T15:44:56.287Z", "dateReserved": "2026-11-01T08:48:41.145Z", "assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2", "datePublished": "2026-11-01T09:47:07.487Z", "assignerShortName": "Gitea"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageName": "gitea.dev", "product": "Gitea", "vendor": "Gitea", "versions": [{"lessThan": "28.3.0", "status": "affected", "version": "1.19.0", "versionType": "semver"}]}], "source": "88ee5874-cf24-4952-aea0-31affedb7ff2"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Workflows triggered by a pull request review were read from the commit named in the review's `commit_id`, while the fork restrictions were decided by the reviewed pull request, and the commit was not checked to belong to that pull request. A user with read access to a repository could place a commit of their own in it, through a fork pull request or an AGit push, and submit a review naming that commit on a pull request whose head branch is in the same repository. On instances with a runner serving the repository, the attacker's workflow then ran without approval, received the Actions secrets of the repository and its owner, and got a `GITEA_TOKEN` with write access to the repository. Review-triggered workflows now run on the pull request head."}], "id": "CVE-2026-118386", "lastModified": "2026-11-06T16:17:50.893", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-118386", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T15:44:31.233331Z", "version": "2.0.3"}}]}, "published": "2026-11-01T10:18:36.073", "references": [{"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "url": "https://blog.gitea.com/release-of-28.3.0/"}, {"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "url": "https://github.com/go-gitea/gitea/pull/40099"}, {"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "url": "https://github.com/go-gitea/gitea/pull/40117"}, {"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "url": "https://github.com/go-gitea/gitea/releases/tag/v28.3.0"}, {"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-32h8-5xqg-h466"}], "sourceIdentifier": "88ee5874-cf24-4952-aea0-31affedb7ff2", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "type": "Secondary"}]}

{"bugzilla": {"description": "code.gitea.io/gitea: gitea: Arbitrary code execution via unverified commit in pull request review workflows", "id": "2564535", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2564535"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-829", "details": ["Workflows triggered by a pull request review were read from the commit named in the review's `commit_id`, while the fork restrictions were decided by the reviewed pull request, and the commit was not checked to belong to that pull request. A user with read access to a repository could place a commit of their own in it, through a fork pull request or an AGit push, and submit a review naming that commit on a pull request whose head branch is in the same repository. On instances with a runner serving the repository, the attacker's workflow then ran without approval, received the Actions secrets of the repository and its owner, and got a `GITEA_TOKEN` with write access to the repository. Review-triggered workflows now run on the pull request head.", "A flaw was found in Gitea. An authenticated user with read access can achieve arbitrary code execution and access sensitive repository credentials by submitting a pull request review that references an unverified commit containing malicious workflow definitions. Because the commit is not validated against the reviewed pull request, unauthorized workflows run automatically on continuous integration runners without required approvals, exposing repository secrets and granting write permissions."], "name": "CVE-2026-118386", "public_date": "2026-11-01T09:47:07Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-118386\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-118386\nhttps://blog.gitea.com/release-of-28.3.0/\nhttps://github.com/go-gitea/gitea/pull/40099\nhttps://github.com/go-gitea/gitea/pull/40117\nhttps://github.com/go-gitea/gitea/releases/tag/v28.3.0\nhttps://github.com/go-gitea/gitea/security/advisories/GHSA-32h8-5xqg-h466"], "statement": "Red Hat has rated this vulnerability as Important rather than Moderate because an authenticated user with low privileges can trigger arbitrary code execution on CI runners, leading to token exfiltration and write-level repository compromise. In Red Hat environments, the affected Gitea package is distributed primarily as an embedded dependency within Pipelines as Code components rather than as a hosted server. Direct exposure is therefore limited to environments hosting vulnerable Gitea instances with active Actions runners, while typical Red Hat pipeline controllers acting strictly as client integrations do not process these workflow review events.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.19.0,28.3.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Gitea", "source": "cna", "vendor": "Gitea"}, "product": "gitea", "vendor": "gitea"}], "created": "2026-11-01T11:30:06.660283+00:00", "updated": "2026-11-06T18:00:10.121941+00:00", "vendors": ["gitea", "gitea$PRODUCT$gitea"]}