9.1

CVE-2026-26232: Gitea OAuth2 authorization codes lack expiry and reuse enforcement

Deferred
AliasesGHSA-5v69-g2m3-3hq3GO-2026-6336
Published 03-07-2026Last modified 07-07-2026

Vulnerability summary

CVE-2026-26232 is a critical (CVSS 9.1) Authentication Bypass by Capture-replay vulnerability in gitea gitea open source git server. EPSS estimates a 0.50% chance of exploitation in the next 30 days, higher than 42.5% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.1 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.1/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.50%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 3
OPENSUSE-SU-2026:21812-1SUSE-SU-2026:23692-1SUSE-SU-2026:23712-1

Timeline

  1. 03-07-2026
    PublishedVulnerability first disclosed.
  2. 07-07-2026
    Last modifiedVulnerability information updated.

Description

Gitea versions before 1.25.5 do not consistently enforce OAuth2 authorization code expiry and single-use behavior during token exchange.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.50%

Chance of exploitation in the next 30 days

Percentile

43%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.50% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Code.gitea.io1 product
  • gitea< 1.25.5
Gitea1 product

2 vendors · 2 products

References

10 links