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Fencer Vulns
medium 6.5

CVE-2026-20904 json

Gitea: Broken access control in OpenID visibility toggle enables cross-user visibility changes

published 2026-01-22 9 mo ago modified 2026-09-08 2 mo ago also BIT-gitea-2026-20904 , EUVD-2026-4262 , GHSA-jrpc-w85r-hgqx , GHSA-qqgv-v353-cv8p , GO-2026-4369

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits
0
none known

Summary

Gitea does not properly validate ownership when toggling OpenID URI visibility. An authenticated user may be able to change the visibility settings of other users' OpenID identities.

Patch / fix

  • go github.com/go-gitea/gitea 1.25.4
  • bitnami gitea 1.25.4
  • go code.gitea.io/gitea 1.25.4
  • gitea gitea 1.25.4
  • govulncheck-vulndb openSUSE Leap 15.6 0.0.20260205T172317-150000.1.146.1

suse advisories SUSE-SU-2026:0403-1

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-20904 updated cvss 6.5

gitea: Gitea: Broken access control in OpenID visibility toggle enables cross-user visibility changes

  • Red Hat OpenShift Pipelines openshift-pipelines/pipelines-opc-rhel9, openshift-pipelines/pipelines-pipelines-as-code-cli-rhel8, openshift-pipelines/pipelines-pipelines-as-code-cli-rhel9, openshift-pipelines/pipelines-pipelines-as-code-watcher-rhel8, openshift-pipelines/pipelines-pipelines-as-code-watcher-rhel9, openshift-pipelines/pipelines-pipelines-as-code-webhook-rhel8, +3 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
9 mo ago

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
OSV 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
go github.com/go-gitea/gitea
<1.25.4
1.25.4
bitnami gitea
<1.25.4
1.25.4
go code.gitea.io/gitea
<1.25.4
1.25.4

Affected products

  • Gitea Gitea Open Source Git Server

Classification

Weakness
  • CWE-284 Improper Access Control
  • CWE-639 Authorization Bypass Through User-Controlled Key

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.