CVE-2023-39438

Name: CVE-2023-39438
Creator: NVD / NIST
Published: 2023-08-15T17:15:12.627+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.39%

Last modified Jun 17, 2026

CVE-2023-39438 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. A missing authorization check allows an arbitrary authenticated user to perform certain operations through the API of CLA-assistant by executing specific additional steps. This allows an arbitrary authenticated user to read CLA information including information of the persons who signed them as well as custom fields the CLA requester had configured. EPSS estimates a 0.39% chance of exploitation in the next 30 days.

Description

A missing authorization check allows an arbitrary authenticated user to perform certain operations through the API of CLA-assistant by executing specific additional steps. This allows an arbitrary authenticated user to read CLA information including information of the persons who signed them as well as custom fields the CLA requester had configured. In addition, an arbitrary authenticated user can update or delete the CLA-configuration for repositories or organizations using CLA-assistant. The stored access tokens for GitHub are not affected, as these are redacted from the API-responses.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

0.39%

31.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Sap	Contributor License Agreement Assistant	< 2.13.1

References

https://github.com/cla-assistant/cla-assistant/security/advisories/GHSA-gw8p-frwv-25ghVendor Advisory
https://github.com/cla-assistant/cla-assistant/security/advisories/GHSA-gw8p-frwv-25ghVendor Advisory

Timeline

Published: Aug 15, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-39438?

How severe is CVE-2023-39438?

CVE-2023-39438 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.39% probability of exploitation in the next 30 days.

How do I fix CVE-2023-39438?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-39438?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST