CVE-2026-101027

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-101027", "assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2", "state": "PUBLISHED", "assignerShortName": "Gitea", "dateReserved": "2026-10-04T21:57:35.568Z", "datePublished": "2026-10-06T19:23:20.387Z", "dateUpdated": "2026-10-07T15:54:52.293Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "88ee5874-cf24-4952-aea0-31affedb7ff2", "shortName": "Gitea", "dateUpdated": "2026-10-06T19:23:20.387Z"}, "title": "Gitea migration SSRF through ALLOWED_DOMAINS address check bypass", "descriptions": [{"lang": "en", "value": "When `[migrations] ALLOWED_DOMAINS` was configured, a hostname matching the allow list was accepted without checking its resolved address against the local-network restrictions. A user who can start repository migrations and control the DNS of an allowed hostname could make it resolve to loopback or private addresses and bypass `ALLOW_LOCALNETWORKS = false`, reaching internal services from the Gitea server. Instances without `ALLOWED_DOMAINS` configured are not affected by this specific bypass."}], "affected": [{"vendor": "Gitea", "product": "Gitea", "packageName": "gitea.dev", "defaultStatus": "unaffected", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "1.27.3", "versionType": "semver"}]}], "references": [{"url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-fqjr-23c8-gg9m", "name": "GitHub Security Advisory GHSA-fqjr-23c8-gg9m", "tags": ["vendor-advisory"]}, {"url": "https://github.com/go-gitea/gitea/pull/39426", "name": "Fix: go-gitea/gitea pull request #39426", "tags": ["patch"]}, {"url": "https://blog.gitea.com/release-of-28.0.0/", "name": "Gitea 28.0.0 release announcement", "tags": ["release-notes"]}, {"url": "https://github.com/go-gitea/gitea/releases/tag/v28.0.0", "name": "go-gitea/gitea v28.0.0 release", "tags": ["release-notes"]}], "credits": [{"lang": "en", "value": "https://github.com/Razzlemouse", "type": "reporter"}, {"lang": "en", "value": "https://github.com/TheFox0x7", "type": "remediation developer"}, {"lang": "en", "value": "https://github.com/silverwind", "type": "remediation developer"}, {"lang": "en", "value": "https://github.com/bircni", "type": "remediation developer"}, {"lang": "en", "value": "https://github.com/wxiaoguang", "type": "remediation developer"}]}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-346", "lang": "en", "description": "CWE-346 Origin Validation Error"}]}], "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-10-07T11:37:40.968109Z", "id": "CVE-2026-101027", "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": "2026-10-07T15:54:52.293Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-101027", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-07T11:37:40.968109Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-346", "description": "CWE-346 Origin Validation Error"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-07T11:37:34.067Z"}}], "cna": {"title": "Gitea migration SSRF through ALLOWED_DOMAINS address check bypass", "credits": [{"lang": "en", "type": "reporter", "value": "https://github.com/Razzlemouse"}, {"lang": "en", "type": "remediation developer", "value": "https://github.com/TheFox0x7"}, {"lang": "en", "type": "remediation developer", "value": "https://github.com/silverwind"}, {"lang": "en", "type": "remediation developer", "value": "https://github.com/bircni"}, {"lang": "en", "type": "remediation developer", "value": "https://github.com/wxiaoguang"}], "affected": [{"vendor": "Gitea", "product": "Gitea", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "1.27.3"}], "packageName": "gitea.dev", "defaultStatus": "unaffected"}], "references": [{"url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-fqjr-23c8-gg9m", "name": "GitHub Security Advisory GHSA-fqjr-23c8-gg9m", "tags": ["vendor-advisory"]}, {"url": "https://github.com/go-gitea/gitea/pull/39426", "name": "Fix: go-gitea/gitea pull request #39426", "tags": ["patch"]}, {"url": "https://blog.gitea.com/release-of-28.0.0/", "name": "Gitea 28.0.0 release announcement", "tags": ["release-notes"]}, {"url": "https://github.com/go-gitea/gitea/releases/tag/v28.0.0", "name": "go-gitea/gitea v28.0.0 release", "tags": ["release-notes"]}], "descriptions": [{"lang": "en", "value": "When `[migrations] ALLOWED_DOMAINS` was configured, a hostname matching the allow list was accepted without checking its resolved address against the local-network restrictions. A user who can start repository migrations and control the DNS of an allowed hostname could make it resolve to loopback or private addresses and bypass `ALLOW_LOCALNETWORKS = false`, reaching internal services from the Gitea server. Instances without `ALLOWED_DOMAINS` configured are not affected by this specific bypass."}], "providerMetadata": {"orgId": "88ee5874-cf24-4952-aea0-31affedb7ff2", "shortName": "Gitea", "dateUpdated": "2026-10-06T19:23:20.387Z"}}}, "cveMetadata": {"cveId": "CVE-2026-101027", "state": "PUBLISHED", "dateUpdated": "2026-10-07T15:54:52.293Z", "dateReserved": "2026-10-04T21:57:35.568Z", "assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2", "datePublished": "2026-10-06T19:23:20.387Z", "assignerShortName": "Gitea"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageName": "gitea.dev", "product": "Gitea", "vendor": "Gitea", "versions": [{"lessThanOrEqual": "1.27.3", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "88ee5874-cf24-4952-aea0-31affedb7ff2"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*", "matchCriteriaId": "B7A6F93E-7785-4553-A8BB-DA84ACFF76F0", "versionEndExcluding": "28.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "When `[migrations] ALLOWED_DOMAINS` was configured, a hostname matching the allow list was accepted without checking its resolved address against the local-network restrictions. A user who can start repository migrations and control the DNS of an allowed hostname could make it resolve to loopback or private addresses and bypass `ALLOW_LOCALNETWORKS = false`, reaching internal services from the Gitea server. Instances without `ALLOWED_DOMAINS` configured are not affected by this specific bypass."}], "id": "CVE-2026-101027", "lastModified": "2026-10-15T02:32:39.673", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 4.0, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-101027", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-07T11:37:40.968109Z", "version": "2.0.3"}}]}, "published": "2026-10-06T20:17:08.233", "references": [{"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "tags": ["Release Notes"], "url": "https://blog.gitea.com/release-of-28.0.0/"}, {"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "tags": ["Patch"], "url": "https://github.com/go-gitea/gitea/pull/39426"}, {"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "tags": ["Release Notes"], "url": "https://github.com/go-gitea/gitea/releases/tag/v28.0.0"}, {"source": "88ee5874-cf24-4952-aea0-31affedb7ff2", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-fqjr-23c8-gg9m"}], "sourceIdentifier": "88ee5874-cf24-4952-aea0-31affedb7ff2", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-346"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.27.3]"}}], "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": "2026-10-06T22:30:07.682788+00:00", "updated": "2026-10-07T17:30:17.725939+00:00", "vendors": ["gitea", "gitea$PRODUCT$gitea"], "weaknesses": ["CWE-918", "CWE-346"]}