CVE-2026-20736

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-20736
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-20736.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-20736
Aliases
Downstream
Related
Published
2026-01-22T22:01:49.678Z
Modified
2026-08-12T03:51:28.903240871Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
Gitea Web Attachment Deletion: Cross-Repository Unauthorized Deletion via Missing Repo Ownership Check
Details

Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access.

Database specific 
{
    "cwe_ids": [
        "CWE-284"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/20xxx/CVE-2026-20736.json",
    "cna_assigner": "Gitea"
}
References

Affected packages

Git / github.com/go-gitea/gitea

Affected ranges

Type
GIT
Repo
https://github.com/go-gitea/gitea
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
369830bada2fd8826a5135cb2fc66660a9bef708
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:gitea:gitea:*:*:*:*:*:-:*:*",
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.25.3"
        },
        {
            "fixed": "1.25.4"
        }
    ]
}

Affected versions

v0.*
v0.9.99
v1.*
v1.0.0
v1.1.0
v1.10.0-dev
v1.10.0-rc1
v1.10.5
v1.11.0-dev
v1.11.0-rc1
v1.12.0-dev
v1.13.0-dev
v1.14.0-dev
v1.15.0-dev
v1.15.0-rc1
v1.16.0-dev
v1.16.0-rc1
v1.17.0-dev
v1.18.0-dev
v1.18.0-rc0
v1.19.0-dev
v1.19.0-rc0
v1.20.0-dev
v1.20.0-rc0
v1.21.0-dev
v1.21.0-rc0
v1.22.0-dev
v1.22.0-rc0
v1.22.0-rc1
v1.23.0-dev
v1.24.0-dev
v1.25.0
v1.25.0-dev
v1.25.0-rc0
v1.25.1
v1.25.2
v1.25.3
v1.26.0-dev
v1.5.0-dev
v1.5.0-rc1
v1.6.0-dev
v1.6.0-rc1
v1.7.0-dev
v1.9.0-dev
v1.9.0-rc1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-20736.json"