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CVE-2024-21623— Arbitrary Expression Injection in github workflow leads to Command execution & leaking secrets

Quick assessment

Affected
mehah otclient
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OTCLient是用 C++20 和 Lua 编写的 otserv 的替代 tibia 客户端，采用模块化系统制成，使用 lua 脚本实现游戏内界面和功能。 OTCLient存在注入漏洞。攻击者利用该漏洞在运行器上远程运行命令、泄露机密并使用此工作流程更改存储库。

CVSS 9.8 · Critical EPSS 1.23% · P69
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I. Basic Information for CVE-2024-21623

Vulnerability Information
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Vulnerability Title
Arbitrary Expression Injection in github workflow leads to Command execution & leaking secrets
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: CVE Program / CVE List V5
Vulnerability Title
OTCLient 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OTCLient是用 C++20 和 Lua 编写的 otserv 的替代 tibia 客户端，采用模块化系统制成，使用 lua 脚本实现游戏内界面和功能。 OTCLient存在注入漏洞。攻击者利用该漏洞在运行器上远程运行命令、泄露机密并使用此工作流程更改存储库。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Shenlong Deep Dive — AI Deep Analysis

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Affected Products

Vendor Product Affected Versions CPE Subscribe
mehah otclient < db560de0b56476c87a2f967466407939196dd254 -

II. Public POCs for CVE-2024-21623

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7226 chars
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III. Intelligence Information for CVE-2024-21623

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Patches & Fixes for CVE-2024-21623 (1)

Vendor Advisories for CVE-2024-21623 (1)

Security Blog Posts for CVE-2024-21623 (1)

IV. Related Vulnerabilities

Same weakness: CWE-74