CVE-2026-78433

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Source
https://cve.org/CVERecord?id=CVE-2026-78433
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-78433.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-78433
Aliases
  • GHSA-frpv-2xgv-wxpq
Published
2026-10-14T14:38:17Z
Modified
2026-10-15T02:47:41Z
Summary
Gitea private attachment disclosure through repository mismatch
Details

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.

Database specific 
{
    "cna_assigner":  "Gitea",
    "cwe_ids":  [
        "CWE-1220",
        "CWE-284",
        "CWE-639",
        "CWE-863"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78433.json"
}
References

Affected packages

Git / github.com/go-gitea/gitea

Affected ranges

Type
GIT
Repo
https://github.com/go-gitea/gitea
Events
Introduced
f09bea7af13bd00d07a34252468389d15de39a8d
Last Affected
1dac1bb2f8593d4319125fa6bca9283000a2ddc2
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "1.26.0"
        },
        {
            "last_affected":  "1.27.2"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v1.*
v1.26.0-dev
v1.27.0
v1.27.0-dev
v1.27.0-rc0
v1.27.1
v1.27.2
v1.28.0-dev

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-78433.json"