GHSA-4v9x-cqc5-j645

Source

https://github.com/advisories/GHSA-4v9x-cqc5-j645

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-4v9x-cqc5-j645/GHSA-4v9x-cqc5-j645.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-4v9x-cqc5-j645

Aliases

CVE-2026-25660

Published

2026-05-05T17:58:09Z

Modified

2026-05-05T18:18:42.296215Z

Severity

9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P CVSS Calculator

Summary

Codechecker has an authentication bypass for certain API calls

Details

Summary

Authentication bypass occurs when the URL ends with Authentication with certain function calls. This bypass allows assigning arbitrary permissions to any existing user in CodeChecker.

Details

The following functions are affected under the Authentication endpoint: getAuthorisedNames, getPermissionsForUser, hasPermission, addPermission, and removePermission.

The vulnerability allows unauthenticated users to execute these function calls with arbitrary arguments. In the logs, the exploit shows as follows:

[INFO 2026-04-23 21:23] - 127.0.0.1:42654 -- [Anonymous] POST /v6.67/Authentication@getAuthorisedNames
[INFO 2026-04-23 21:23] - 127.0.0.1:42654 -- [Anonymous] POST /v6.67/Authentication@addPermission

Impact

An attacker with a CodeChecker user can effectively acquire superuser permissions by calling these endpoints.

Patch

A patch is available at https://github.com/Ericsson/codechecker/releases/tag/v6.27.4.

Database specific

{
    "github_reviewed": true,
    "severity": "CRITICAL",
    "github_reviewed_at": "2026-05-05T17:58:09Z",
    "cwe_ids": [
        "CWE-290",
        "CWE-863"
    ],
    "nvd_published_at": "2026-04-24T14:16:18Z"
}

References

Affected packages

PyPI / codechecker

Package

Name: codechecker; View open source insights on deps.dev
Purl: pkg:pypi/codechecker

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Last affected

6.27.3

Affected versions

6.*

6.16.0a1

6.16.0

6.17.0

6.18.0

6.18.1

6.18.2

6.19.0

6.19.1

6.20.0rc1

6.20.0

6.21.0rc1

6.21.0

6.22.0rc1

6.22.0

6.22.1

6.22.2

6.22.2.post1

6.23.0rc2

6.23.0

6.23.1

6.24.0

6.24.1

6.24.2

6.24.4

6.25.0

6.25.1

6.26.0

6.26.1

6.26.2

6.27.1

6.27.3

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-4v9x-cqc5-j645/GHSA-4v9x-cqc5-j645.json"