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Vulnerability record · CVE-2021-45331 · published 9 February 2022

CVE-2021-45331: Gitea improper authentication vulnerability

Gitea · Gitea

An Authentication Bypass vulnerability exists in Gitea before 1.5.0, which could let a malicious user gain privileges. If captured, the TOTP code for the 2FA can be submitted correctly more than once.

9.8 CVSS 3.1 Critical EPSS 1.4% · top 28.0% CWE-287 · Improper authentication
9.8CVSS 3.1 base score, v2 7.5
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

An Authentication Bypass vulnerability exists in Gitea before 1.5.0, which could let a malicious user gain privileges. If captured, the TOTP code for the 2FA can be submitted correctly more than once.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://blog.gitea.io/2018/08/gitea-1.5.0-is-released/ Release NotesVendor Advisory
https://github.com/go-gitea/gitea/pull/3878 PatchThird Party Advisory
https://blog.gitea.io/2018/08/gitea-1.5.0-is-released/ Release NotesVendor Advisory
https://github.com/go-gitea/gitea/pull/3878 PatchThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-60004Gitea diffpatch API code injection enables remote code executionGitea before 1.27.1 allows remote code execution through the diffpatch API by way of Git hook installation. The flaw is a code injection issue (CWE-9…KEVEPSS 24%analysed9.8CVE-2022-42968Gitea argument injection vulnerabilityGitea before 1.17.3 does not sanitize and escape refs in the git backend. Arguments to git commands are mishandled.EPSS 1.2%9.8CVE-2021-45330Gitea vulnerabilityAn issue exsits in Gitea through 1.15.7, which could let a malicious user gain privileges due to client side cookies not being deleted and the sessio…EPSS 1.4%9.8CVE-2021-45327Gitea interpretation conflict vulnerabilityGitea before 1.11.2 is affected by Trusting HTTP Permission Methods on the Server Side when referencing the vulnerable admin or user API. which could…EPSS 2.1%9.8CVE-2020-28991Gitea vulnerabilityGitea 0.9.99 through 1.12.x before 1.12.6 does not prevent a git protocol path that specifies a TCP port number and also contains newlines (with URL …EPSS 1.7%9.8CVE-2019-11576Gitea improper authentication vulnerabilityGitea before 1.8.0 allows 1FA for user accounts that have completed 2FA enrollment. If a user's credentials are known, then an attacker could send th…EPSS 1.8%9.8CVE-2018-18926Gitea vulnerabilityGitea before 1.5.4 allows remote code execution because it does not properly validate session IDs. This is related to session ID handling in the go-m…EPSS 3.0%9.1CVE-2026-20912Gitea improper access control vulnerabilityGitea does not properly validate repository ownership when linking attachments to releases. An attachment uploaded to a private repository could pote…EPSS 0.46%

Source: NIST National Vulnerability Database (record CVE-2021-45331), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.