CVE-2026-20897

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.42% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 35.0% of scored records. A rank, not a probability.

NVD base score

9.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-07-15.

Red Hat severity

Critical. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-01-22 22:01Z7 MO AGO

Last updated

2026-07-15 01:20Z1 MO AGO

Reserved

2026-01-08

Assigning CNA

Gitea

Record state

PUBLISHED

Severity

Critical (CVSS 9.1)

CNA CVSS vector

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

Weaknesses

• CWE-284Improper Access ControlPillar
• CWE-639Authorization Bypass Through User-Controlled KeyBase

Data version

5.2

Document digest

e40cd4f7b3460441b5dbd334bf8c0ab60ad34b17ce9fe881e8067b382cb9c5b8

• github.comGitHub Security Advisoryhttps://github.com/go-gitea/gitea/security/advisories/GHSA-rrq5-r9h5-pc7cvendor-advisory
• github.comGitHub Pull Request #36344https://github.com/go-gitea/gitea/pull/36344patch
• github.comGitHub Pull Request #36349https://github.com/go-gitea/gitea/pull/36349patch
• github.comGitea v1.25.4 Releasehttps://github.com/go-gitea/gitea/releases/tag/v1.25.4release-notes
• blog.gitea.comGitea v1.25.4 Release Blog Posthttps://blog.gitea.com/release-of-1.25.4/release-notes
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-20897vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2432204https://bugzilla.redhat.com/show_bug.cgi?id=2432204issue-trackingx_refsource_REDHAT
• security.access.redhat.comhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20897.jsonx_sadp-csaf-vex