{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-78433",
        "assignerOrgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
        "state": "PUBLISHED",
        "assignerShortName": "Gitea",
        "dateReserved": "2026-08-24T20:45:09.297Z",
        "datePublished": "2026-10-14T14:38:17.247Z",
        "dateUpdated": "2026-10-14T14:38:17.247Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "88ee5874-cf24-4952-aea0-31affedb7ff2",
                "shortName": "Gitea",
                "dateUpdated": "2026-10-14T14:38:17.247Z"
            },
            "title": "Gitea private attachment disclosure through repository mismatch",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Gitea's web attachment handler skips its cross-repository ownership check for attachments created before 16 January 2026 and checks permissions against the repository named in the request URL instead. An unauthenticated attacker who knows a private attachment's UUID can request it through a public repository's attachment path and retrieve its contents. This can expose issue and pull request attachments or release assets; the random attachment UUID must already be known to the attacker."
                }
            ],
            "affected": [
                {
                    "vendor": "Gitea",
                    "product": "Gitea",
                    "packageName": "gitea.dev",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "1.26.0",
                            "status": "affected",
                            "lessThanOrEqual": "1.27.2",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://github.com/go-gitea/gitea/security/advisories/GHSA-frpv-2xgv-wxpq",
                    "name": "GitHub Security Advisory GHSA-frpv-2xgv-wxpq",
                    "tags": [
                        "vendor-advisory"
                    ]
                },
                {
                    "url": "https://blog.gitea.com/release-of-1.27.3/",
                    "name": "Gitea 1.27.3 release announcement",
                    "tags": [
                        "release-notes"
                    ]
                },
                {
                    "url": "https://github.com/go-gitea/gitea/pull/39048",
                    "name": "Fix: go-gitea/gitea pull request #39048",
                    "tags": [
                        "patch"
                    ]
                },
                {
                    "url": "https://github.com/go-gitea/gitea/pull/39077",
                    "name": "Fix: go-gitea/gitea pull request #39077",
                    "tags": [
                        "patch"
                    ]
                },
                {
                    "url": "https://github.com/go-gitea/gitea/releases/tag/v1.27.3",
                    "name": "go-gitea/gitea v1.27.3 release",
                    "tags": [
                        "release-notes"
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "type": "CWE",
                            "cweId": "CWE-284",
                            "description": "CWE-284: Improper Access Control"
                        },
                        {
                            "lang": "en",
                            "type": "CWE",
                            "cweId": "CWE-639",
                            "description": "CWE-639: Authorization Bypass Through User-Controlled Key"
                        },
                        {
                            "lang": "en",
                            "type": "CWE",
                            "cweId": "CWE-863",
                            "description": "CWE-863: Incorrect Authorization"
                        },
                        {
                            "lang": "en",
                            "type": "CWE",
                            "cweId": "CWE-1220",
                            "description": "CWE-1220: Insufficient Granularity of Access Control"
                        }
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "https://github.com/iabdullah215",
                    "type": "reporter"
                },
                {
                    "lang": "en",
                    "value": "https://github.com/bircni",
                    "type": "remediation developer"
                },
                {
                    "lang": "en",
                    "value": "https://github.com/silverwind",
                    "type": "remediation developer"
                }
            ]
        }
    }
}