CVE-2026-78433

See a problem?
Please try reporting it to the source first.
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
2026-10-28T02:30:26Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
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
Fixed
146cc3eec57174711eac0e0a0c7b38670c6e3922
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "1.26.0"
                },
                {
                    "last_affected": "1.27.2"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "original_tag": "v1.27.3",
            "range": [
                {
                    "fixed": "146cc3eec57174711eac0e0a0c7b38670c6e3922"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

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"