CVE-2024-27516 is a critical-severity (CVSS 9.8) OS Command Injection vulnerability in remdex/livehelperchat. A fix is available for remdex/livehelperchat — see the affected versions and patch details below.
livehelperchat Server-Side Template Injection
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- A successful exploit gives an attacker total control of the affected component, not partial access.
Exploitation and automatability from CISA’s SSVC triage for CVE-2024-27516.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
remdex/livehelperchatReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
Server-Side Template Injection (SSTI) vulnerability in livehelperchat before 4.34v, allows remote attackers to execute arbitrary code and obtain sensitive information via the search parameter in lhc_web/modules/lhfaq/faqweight.php.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | remdex/livehelperchat | all versions | 4.29composer require remdex/livehelperchat:^4.29 |
Affected Products
live helper chatlivehelperchatDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for remdex/livehelperchat, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update remdex/livehelperchat to 4.29 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-27516 is resolved across your whole dependency graph.
Workarounds
Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.
Frequently Asked Questions
Is CVE-2024-27516 in your dependencies?
Find it across Packagist, including transitive dependencies.