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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-20897

35
FAUCET Score

CVE-2026-20897 is a critical vulnerability affecting Gitea, where improper validation of repository ownership allows an authenticated user with write access to one repository to delete Git LFS locks belonging to other repositories. This vulnerability carries a CVSS score of 9.1 (CRITICAL) due to its network-based attack vector, low attack complexity, and high impact on confidentiality and integrity, potentially leading to unauthorized data manipulation. While there is no known active exploitation, public exploit code, or KEV listing, the vulnerability has garnered significant community discussion with 10 mentions, indicating awareness and potential future interest.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.25.4CPE matchmatch criteria
cpe:2.3:a:gitea:gitea:*:*:*:*:*:-:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
34.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 11th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/go-gitea/giteaFixed in: 1.25.4

Vendor Advisories (2)

goGHSA-393c-qgvj-3xphmedium

Gitea does not properly validate repository ownership when deleting Git LFS locks

Jan 23, 2026
redhatCVE-2026-20897Critical

gitea: Gitea Git LFS Lock Deletion Broken Access Control (Cross-Repo IDOR)

Jan 22, 2026

References

access.redhat.com / security/cve/CVE-2026-20897
bugzilla.redhat.com / show_bug.cgi
security.access.redhat.com / data/csaf/v2/vex/2026/cve-2026-20897.json
blog.gitea.com / release-of-1.25.4
Release Notes
github.com / go-gitea/gitea/pull/36344
Issue TrackingPatch
github.com / go-gitea/gitea/pull/36349
Issue TrackingPatch
github.com / go-gitea/gitea/releases/tag/v1.25.4
Release Notes
github.com / go-gitea/gitea/security/advisories/GHSA-rrq5-r9h5-pc7c
Broken Link