5.6
MEDIUM CVSS 3.1
CVE-2026-13543
Documenso Google OAuth Login handle-oauth-callback-url.ts improper authentication
Description

A vulnerability was detected in Documenso up to 2.11.0. Affected by this vulnerability is an unknown functionality of the file packages/auth/server/lib/utils/handle-oauth-callback-url.ts of the component Google OAuth Login. The manipulation results in improper authentication. It is possible to launch the attack remotely. This attack is characterized by high complexity. The exploitation appears to be difficult. The exploit is now public and may be used. The pull request to fix this issue awaits acceptance.

INFO

Published Date :

June 29, 2026, 6:30 a.m.

Last Modified :

June 29, 2026, 6:30 a.m.

Remotely Exploit :

Yes !

Source :

VulDB
Affected Products

The following products are affected by CVE-2026-13543 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

No affected product recoded yet

CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.1 MEDIUM [email protected]
CVSS 4.0 LOW [email protected]
Solution
Apply the pending pull request to fix the improper authentication vulnerability.
  • Apply the pending pull request to fix the authentication issue.
  • Review the security implications of the Google OAuth login functionality.
  • Monitor for updated security advisories from the vendor.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-13543 vulnerability anywhere in the article.

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.