6.5

CVE-2026-20883: gitea Improper Access Control

CVSS: 6.5v3.1MediumAnalyzed
AliasesGHSA-j8xr-c56q-m8jjBIT-gitea-2026-20883GHSA-644v-xv3j-xgqg
Published 22-01-2026Last modified 23-01-2026
Open JSON

Vulnerability summary

CVE-2026-20883 is a medium (CVSS 6.5) Improper Access Control vulnerability in gitea. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 28.5% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.36%
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. 23-01-2026
    Last modifiedVulnerability information updated.

Description

Gitea's stopwatch API does not re-validate repository access permissions. After a user's access to a private repository is revoked, they may still view issue titles and repository names through previously started stopwatches.

CVSS metrics

3 scores · 3 sources · 2 versions

EPSS trend

Probability

0.36%

Chance of exploitation in the next 30 days

Percentile

29%

Versus all other CVEs

30-day change

-0.01 pp

From 0.37% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.36%

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
Github.com/go-gitea1 product
  • gitea< 1.25.4

3 vendors · 4 products

References

10 links