GHSA-26qj-cr27-r5c4
LOWOctopoller gem published with world-writable files
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.
Blast Radius
octopollerReal-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
Impact
Version 0.2.0 of the octopoller gem was published containing world-writeable files. Specifically, the gem was packed with files having their permissions set to -rw-rw-rw- (i.e. 0666) instead of rw-r--r-- (i.e. 0644).
This means everyone who is not the owner (Group and Public) with access to the instance where this release had been installed could modify the world-writable files from this gem.
Malicious code already present and running on your machine, separate from this package, could modify the gem’s files and change its behavior during runtime.
Patches
- octopoller 0.3.0
Workarounds
Users can use the previous version of the gem v0.1.0. Alternatively, users can modify the file permissions manually until they are able to upgrade to the latest version.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 💎RubyGems | octopoller | ≥ 0.2.0&&< 0.3.0 | 0.3.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for octopoller. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update octopoller to 0.3.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-26qj-cr27-r5c4 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 pinpoints whether GHSA-26qj-cr27-r5c4 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-26qj-cr27-r5c4. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-26qj-cr27-r5c4 in your dependencies?
O3 detects GHSA-26qj-cr27-r5c4 across RubyGems dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.