GHSA-c273-c6vg-4pv5 is a medium-severity (CVSS 4.3) CWE-639 vulnerability in publify_core. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for publify_core — see the affected versions and patch details below.
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
publify_coreReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.
Description
A low-privileged user can modify and delete admin articles by changing the value of the article[id] parameter prior to 9.2.9.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 💎RubyGems | publify_core | all versions | 9.2.9bundle update publify_core --conservative |
Affected Products
publifypublify_projectResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for publify_core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update publify_core to 9.2.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-c273-c6vg-4pv5 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.
Frequently Asked Questions
Is GHSA-c273-c6vg-4pv5 in your dependencies?
Find it across RubyGems, including transitive dependencies.