Is this vulnerability remotely exploitable?

Yes, it can typically be exploited remotely via the Gitea web interface or API, as long as the attacker has legitimate access to at least one private repository and the ability to manage releases in another repository with broader visibility.

What level of access does an attacker need?

The attacker generally needs authenticated access that allows them to upload attachments in a private repository and create or edit releases in a public (or more widely visible) repository. They do not need administrative access to the server itself.

What is the safest general fix pattern?

The most robust fix is to enforce strict, centralized authorization for attachment operations: always verify that the attachment's original repository is compatible with the target release's repository and that the acting user has permission to expose the attachment in that context. Avoid trusting raw attachment IDs or user-supplied keys without contextual checks.

Severity:

CRITICAL RISK

(9.1)

Improper Access Control on Release Attachments (CWE-284) in Gitea Repository Ownership Checks

CVE-2026-20912

Published:

Jan 22, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Improper Access Control

CWE:

CWE-284;CWE-639

Impact:

Unauthorized Access to Private Repository Attachments

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

Vulnerability Type

Category:

Improper Access Control

CWE:

CWE-284;CWE-639

Impact:

Unauthorized Access to Private Repository Attachments

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Improper Access Control on Release Attachments (CWE-284) in Gitea Repository Ownership Checks

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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