CVE-2024-21623

Name: CVE-2024-21623
Creator: NVD / NIST
Published: 2024-01-02T21:15:10.25+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.23%

Last modified Jun 17, 2026

CVE-2024-21623 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. OTCLient is an alternative tibia client for otserv. Prior to commit db560de0b56476c87a2f967466407939196dd254, the /mehah/otclient "`Analysis - SonarCloud`" workflow is vulnerable to an expression injection in Actions, allowing an attacker to run commands remotely on the runner, leak secrets, and alter the repository using this workflow. EPSS estimates a 1.23% chance of exploitation in the next 30 days.

Description

OTCLient is an alternative tibia client for otserv. Prior to commit db560de0b56476c87a2f967466407939196dd254, the /mehah/otclient "`Analysis - SonarCloud`" workflow is vulnerable to an expression injection in Actions, allowing an attacker to run commands remotely on the runner, leak secrets, and alter the repository using this workflow. Commit db560de0b56476c87a2f967466407939196dd254 contains a fix for this issue.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

1.23%

65.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-74

Affected Software

Vendor	Product	Versions
Mehah	Otclient	< 2023-12-30

References

https://github.com/mehah/otclient/blob/72744edc3b9913b920e0fd12e929604f682fda75/.github/workflows/analysis-sonarcloud.yml#L91-L104Product
https://github.com/mehah/otclient/commit/db560de0b56476c87a2f967466407939196dd254Patch
https://github.com/mehah/otclient/security/advisories/GHSA-q6gr-wc79-v589Exploit, Vendor Advisory
https://securitylab.github.com/research/github-actions-preventing-pwn-requests/Exploit, Third Party Advisory
https://securitylab.github.com/research/github-actions-untrusted-input/Exploit, Third Party Advisory
https://github.com/mehah/otclient/blob/72744edc3b9913b920e0fd12e929604f682fda75/.github/workflows/analysis-sonarcloud.yml#L91-L104Product
https://github.com/mehah/otclient/commit/db560de0b56476c87a2f967466407939196dd254Patch
https://github.com/mehah/otclient/security/advisories/GHSA-q6gr-wc79-v589Exploit, Vendor Advisory
https://securitylab.github.com/research/github-actions-preventing-pwn-requests/Exploit, Third Party Advisory
https://securitylab.github.com/research/github-actions-untrusted-input/Exploit, Third Party Advisory

Timeline

Published: Jan 2, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-21623?

How severe is CVE-2024-21623?

CVE-2024-21623 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.23% probability of exploitation in the next 30 days.

How do I fix CVE-2024-21623?

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-2024-21623?

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

Scan your code now

Source: NVD / NIST