{
    "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"
            }
        }
    }
}