GHSA-f3f8-vx3w-hp5q is a critical-severity (CVSS 10) CWE-288 vulnerability in codechecker. EPSS puts its 30-day exploitation probability at 39.9% (99th percentile). A fix is available for codechecker — see the affected versions and patch details below.
codechecker vulnerable to authentication bypass when using specifically crafted URLs
Exploitation Status
No confirmed exploitation observed yet
- 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.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for GHSA-f3f8-vx3w-hp5q.
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-f3f8-vx3w-hp5q 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 377,166 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
codecheckerReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
Summary
Authentication bypass occurs when the API URL ends with Authentication, Configuration or ServerInfo. This bypass allows superuser access to all API endpoints other than Authentication. These endpoints include the ability to add, edit, and remove products, among others.
Details
All endpoints, apart from the /Authentication is affected by the vulnerability.
The vulnerability allows unauthenticated users to access all API functionality.
You can look for the following pattern in the logs to check if the vulnerabilty was exploited:
Note that the url starts with v and contains a valid CodeChecker endpoint, but it ends in Authentication, Configuration or ServerInfo and it was made by an Anonymous user.
Impact
This authentication bypass allows querying, adding, changing, and deleting Products contained on the CodeChecker server, without authentication, by an anonymous user.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | codechecker | all versions | 6.24.2pip install --upgrade 'codechecker==6.24.2' |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for codechecker, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update codechecker to 6.24.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-f3f8-vx3w-hp5q 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-f3f8-vx3w-hp5q can be triaged on real exposure rather than presence alone.
Tailored to GHSA-f3f8-vx3w-hp5q. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
How to detect GHSA-f3f8-vx3w-hp5q
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id ghsa-f3f8-vx3w-hp5q -u https://target- Template
- CodeChecker <= 6.24.1 - Authentication Bypass
- Severity
- critical
- Impact
- Unauthenticated attackers can bypass authentication by crafting API URLs ending with specific keywords, gaining superuser access to all API endpoints including product management and configuration.
- Remediation
- Upgrade CodeChecker to version 6.24.2 or later.
Template by ProjectDiscovery nuclei-templates (iamnoooob, rootxharsh, pdresearch), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is GHSA-f3f8-vx3w-hp5q in your dependencies?
O3 Security finds GHSA-f3f8-vx3w-hp5q across PyPI dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.