{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-82402", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-28T22:00:43.512Z", "datePublished": "2026-10-14T18:49:19.768Z", "dateUpdated": "2026-10-14T18:49:19.768Z"}, "containers": {"cna": {"title": "Gogs: Open Redirect in /redirect endpoint via backslash bypass in `IsSameSite`", "problemTypes": [{"descriptions": [{"cweId": "CWE-601", "lang": "en", "description": "CWE-601: URL Redirection to Untrusted Site ('Open Redirect')", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/gogs/gogs/security/advisories/GHSA-3g28-2vwg-gxq6", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/gogs/gogs/security/advisories/GHSA-3g28-2vwg-gxq6"}, {"name": "https://github.com/gogs/gogs/pull/8391", "tags": ["x_refsource_MISC"], "url": "https://github.com/gogs/gogs/pull/8391"}, {"name": "https://github.com/gogs/gogs/commit/0aa820e6d572771551871c0b5f5f32dffc565e3e", "tags": ["x_refsource_MISC"], "url": "https://github.com/gogs/gogs/commit/0aa820e6d572771551871c0b5f5f32dffc565e3e"}, {"name": "https://github.com/gogs/gogs/blob/main/CHANGELOG.md#0150dev-main", "tags": ["x_refsource_MISC"], "url": "https://github.com/gogs/gogs/blob/main/CHANGELOG.md#0150dev-main"}], "affected": [{"vendor": "gogs", "product": "gogs", "versions": [{"version": "< 0.15.0+dev", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-14T18:49:19.768Z"}, "descriptions": [{"lang": "en", "value": "Gogs is an open source self-hosted Git service. Prior to 0.15.0+dev, an unauthenticated attacker can provide a backslash-containing target to the /redirect endpoint, and similar post-action redirect flows are also affected. internal/urlx/urlx.go IsSameSite validates a normalized form of the target while cmd/gogs/internal/web/web.go getRedirect and other callers use the original value in the Location response. This backslash normalization mismatch lets browsers interpret the Location value as a scheme-relative external URL, allowing links on a trusted Gogs domain to redirect victims to attacker-controlled content for phishing. This vulnerability is fixed in 0.15.0+dev."}], "source": {"advisory": "GHSA-3g28-2vwg-gxq6", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "gogs", "vendor": "gogs", "versions": [{"status": "affected", "version": "< 0.15.0+dev"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Gogs is an open source self-hosted Git service. Prior to 0.15.0+dev, an unauthenticated attacker can provide a backslash-containing target to the /redirect endpoint, and similar post-action redirect flows are also affected. internal/urlx/urlx.go IsSameSite validates a normalized form of the target while cmd/gogs/internal/web/web.go getRedirect and other callers use the original value in the Location response. This backslash normalization mismatch lets browsers interpret the Location value as a scheme-relative external URL, allowing links on a trusted Gogs domain to redirect victims to attacker-controlled content for phishing. This vulnerability is fixed in 0.15.0+dev."}], "id": "CVE-2026-82402", "lastModified": "2026-10-14T19:17:21.660", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-14T19:17:21.660", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/gogs/gogs/blob/main/CHANGELOG.md#0150dev-main"}, {"source": "security-advisories@github.com", "url": "https://github.com/gogs/gogs/commit/0aa820e6d572771551871c0b5f5f32dffc565e3e"}, {"source": "security-advisories@github.com", "url": "https://github.com/gogs/gogs/pull/8391"}, {"source": "security-advisories@github.com", "url": "https://github.com/gogs/gogs/security/advisories/GHSA-3g28-2vwg-gxq6"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-601"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}