What is the CVSS score of CVE-2026-20897?

CVE-2026-20897 has a CVSS 3.1 base score of 9.1 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N. EPSS exploitation probability: 0.0%.

Which versions of Gitea are affected by CVE-2026-20897?

A critical vulnerability in Gitea allows users with write access to one repository to maliciously delete Git LFS locks in other repositories, potentially corrupting or blocking access to shared…. A patch is available.

How to fix or mitigate CVE-2026-20897?

Within 24 hours: Assess your Gitea deployment version and confirm if you are running an affected version. Within 7 days: Apply the available vendor patch to all Gitea instances in your environment and test functionality in a staging environment first. Within 30 days: Conduct a security audit of repository access logs to identify if this vulnerability was exploited, and implement mandatory code review processes for LFS lock modifications.

Gitea CVE-2026-20897

CRITICAL

Improper Access Control (CWE-284)

2026-01-22 88ee5874-cf24-4952-aea0-31affedb7ff2

GHSA-393c-qgvj-3xph

Authentication Bypass Gitea

9.1

CVSS 3.1 · Vendor: 88ee5874-cf24-4952-aea0-31affedb7ff2

Severity by source

Vendor (88ee5874-cf24-4952-aea0-31affedb7ff2) PRIMARY

9.1 CRITICAL

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

SUSE

CRITICAL

qualitative

Red Hat

9.1 CRITICAL

qualitative

Primary rating from Vendor (88ee5874-cf24-4952-aea0-31affedb7ff2).

CVSS VectorVendor: 88ee5874-cf24-4952-aea0-31affedb7ff2

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

Patch released

Jan 29, 2026 - 22:02 nvd

Patch available

CVE Published

Jan 22, 2026 - 22:16 nvd

CRITICAL 9.1

DescriptionCVE.org

Gitea does not properly validate repository ownership when deleting Git LFS locks. A user with write access to one repository may be able to delete LFS locks belonging to other repositories.

AnalysisAI

Gitea fails to validate repository ownership when deleting Git LFS locks, allowing users with write access to one repo to delete LFS locks in other repositories.

Technical ContextAI

Gitea does not properly validate that the target LFS lock belongs to the repository the user has access to (CWE-284), allowing cross-repository LFS lock manipulation.

RemediationAI

Update Gitea to the patched version.

More in Gitea

View all

CVE-2026-27771 HIGH Act Now POC

8.2 Jul 03

Broken access control in Gitea's Composer package registry (versions up to and including 1.26.1) lets remote attackers r

CVE-2022-30781 HIGH Act Now POC

7.5 May 16

Gitea before 1.16.7 does not escape git fetch remote. Rated high severity (CVSS 7.5), this vulnerability is remotely exp

CVE-2020-14144 HIGH Act Now POC

7.2 Oct 16

The git hook feature in Gitea 1.1.0 through 1.12.5 might allow for authenticated remote code execution in customer envir

CVE-2024-6886 CRITICAL Act Now POC

10.0 Aug 06

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea Gitea

CVE-2026-58053 CRITICAL Act Now POC

9.4 Jun 28

Container escape in Gitea act_runner (Docker backend, through act 0.262.0) lets an authenticated user with workflow-exec

CVE-2019-11229 HIGH This Week POC

8.8 Apr 15

models/repo_mirror.go in Gitea before 1.7.6 and 1.8.x before 1.8-RC3 mishandles mirror repo URL settings, leading to rem

CVE-2020-13246 HIGH This Week POC

7.5 May 20

An issue was discovered in Gitea through 1.11.5. Rated high severity (CVSS 7.5), this vulnerability is remotely exploita

CVE-2022-0905 HIGH This Week POC

7.1 Mar 10

Missing Authorization in GitHub repository go-gitea/gitea prior to 1.16.4. Rated high severity (CVSS 7.1), this vulnerab

CVE-2022-1058 MEDIUM This Month POC

6.1 Mar 24

Open Redirect on login in GitHub repository go-gitea/gitea prior to 1.16.5. Rated medium severity (CVSS 6.1), this vulne

CVE-2026-20896 CRITICAL Act Now POC

9.8 Jul 03

Reverse-proxy authentication bypass in the official Gitea Docker image (versions up to and including 1.26.2) allows any

CVE-2026-27780 CRITICAL Act Now

9.8 Jul 03

Branch-protection bypass in Gitea's self-hosted Git server (all versions before 1.26.0) allows a user with push access t

CVE-2026-26292 CRITICAL Act Now

9.8 Jul 03

Migration transport protections in Gitea are bypassed for Git LFS operations, affecting all self-hosted instances before

Same weakness CWE-284 – Improper Access Control

View all

CVE-2012-4681 CRITICAL POC

9.8

CVE-2011-3544 CRITICAL POC

9.8

CVE-2012-1723 CRITICAL POC

9.8

CVE-2012-5076 CRITICAL POC

9.8

CVE-2014-3120 HIGH POC

8.1

CVE-2013-2423 LOW POC

3.7

CVE-2016-3427 CRITICAL

9.8

CVE-2025-12480 CRITICAL POC

9.1

Same technique Authentication Bypass

View all

CVE-2023-22515 CRITICAL POC

9.8

CVE-2012-4681 CRITICAL POC

9.8

CVE-2013-2465 CRITICAL POC

9.8

CVE-2011-3544 CRITICAL POC

9.8

CVE-2012-1723 CRITICAL POC

9.8

CVE-2017-10271 HIGH POC

7.5

CVE-2015-1427 CRITICAL POC

9.8

CVE-2025-3248 CRITICAL POC

9.8

Vendor StatusVendor

SUSE

Severity: Critical

Product	Status
openSUSE Leap 15.6	Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP5	Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP6	Fixed
openSUSE Leap 15.5	Fixed

CVE-2026-20897 vulnerability details – vuln.today

Back

Gitea CVE-2026-20897

Severity by source

CVSS VectorVendor: 88ee5874-cf24-4952-aea0-31affedb7ff2

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

More in Gitea

Same weakness CWE-284 – Improper Access Control

Same technique Authentication Bypass

Vendor StatusVendor

SUSE

Share

External POC / Exploit Code