{"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":"2026-10-20T01:58:51.683Z"},"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"}},"adp":[{"references":[{"url":"https://github.com/gogs/gogs/security/advisories/GHSA-3g28-2vwg-gxq6","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-20T01:58:24.208606Z","id":"CVE-2026-82402","options":[{"Exploitation":"poc"},{"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":"2026-10-20T01:58:51.683Z"}}]}}