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, 7:16 a.m.
Last Modified :
June 29, 2026, 6:41 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| 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 authentication issue.
- Review the security implications of the Google OAuth login functionality.
- Monitor for updated security advisories from the vendor.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-13543.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-13543 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-13543
weaknesses.
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.
The following table lists the changes that have been made to the
CVE-2026-13543 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 29, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-13543', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-29T10:51:50.370152Z'} -
New CVE Received by [email protected]
Jun. 29, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:documenso:documenso:*:*:*:*:*:*:*:*'], 'vendor': 'n/a', 'modules': ['Google OAuth Login'], 'product': 'Documenso', 'versions': [{'status': 'affected', 'version': '2.0'}, {'status': 'affected', 'version': '2.1'}, {'status': 'affected', 'version': '2.2'}, {'status': 'affected', 'version': '2.3'}, {'status': 'affected', 'version': '2.4'}, {'status': 'affected', 'version': '2.5'}, {'status': 'affected', 'version': '2.6'}, {'status': 'affected', 'version': '2.7'}, {'status': 'affected', 'version': '2.8'}, {'status': 'affected', 'version': '2.9'}, {'status': 'affected', 'version': '2.10'}, {'status': 'affected', 'version': '2.11.0'}]}] Added 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. Added CVSS V4.0 AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L Added CVSS V2 (AV:N/AC:H/Au:N/C:P/I:P/A:P) Added CWE CWE-287 Added Reference https://github.com/documenso/documenso/ Added Reference https://github.com/documenso/documenso/issues/2758 Added Reference https://github.com/documenso/documenso/pull/2837 Added Reference https://vuldb.com/cve/CVE-2026-13543 Added Reference https://vuldb.com/submit/842579 Added Reference https://vuldb.com/vuln/374551 Added Reference https://vuldb.com/vuln/374551/cti