GHSA-2877-693q-pj33 is a critical-severity (CVSS 9.8) OS Command Injection vulnerability in genieacs. EPSS puts its 30-day exploitation probability at 21.9% (98th percentile). A fix is available for genieacs — see the affected versions and patch details below.
OS Command Injection in GenieACS
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
GHSA-2877-693q-pj33 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 378,567 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
genieacsnpmDescription
In GenieACS 1.2.x before 1.2.8, the UI interface API is vulnerable to unauthenticated OS command injection via the ping host argument (lib/ui/api.ts and lib/ping.ts). The vulnerability arises from insufficient input validation combined with a missing authorization check.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | genieacs | all versions | 1.2.8npm install genieacs@1.2.8 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for genieacs, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update genieacs to 1.2.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-2877-693q-pj33 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-2877-693q-pj33 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-2877-693q-pj33. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
How to detect GHSA-2877-693q-pj33
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id ghsa-2877-693q-pj33 -u https://target- Template
- GenieACS => 1.2.8 - OS Command Injection
- Severity
- critical
- Impact
- Successful exploitation of this vulnerability could allow an attacker to execute arbitrary commands on the target system.
- Remediation
- Upgrade to a patched version of GenieACS or apply the necessary security patches to mitigate the vulnerability.
Template by ProjectDiscovery nuclei-templates (DhiyaneshDK), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is GHSA-2877-693q-pj33 in your dependencies?
O3 Security finds GHSA-2877-693q-pj33 across npm dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.