7.5

CVE-2026-20736: gitea Improper Access Control

CVSS: 7.5v3.1HighModified
AliasesGHSA-hgr3-x44x-33hxBIT-gitea-2026-20736GHSA-jr6h-pwwp-c8g6
Published 22-01-2026Last modified 15-07-2026
Open JSON

Vulnerability summary

CVE-2026-20736 is a high (CVSS 7.5) Improper Access Control vulnerability in gitea. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 36.2% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.43%
0%100%
Low · -0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:21483-1SUSE-SU-2026:0403-1

Timeline

  1. 22-01-2026
    PublishedVulnerability first disclosed.
  2. 15-07-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 3 sources · 2 versions

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

36%

Versus all other CVEs

30-day change

-0.01 pp

From 0.44% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.43%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Gitea2 products
Code.gitea.io1 product
  • gitea< 1.25.4

2 vendors · 3 products

References

12 links
Show all 12 references