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💎 RubyGems

GHSA-mpwp-4h2m-765c

Active Job - Object injection security vulnerability

Published
Jan 16, 2026
Updated
Feb 3, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

Blast Radius

1 pkg affected
💎activejob

Real-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

Active Job vulnerability: An Active Job bug allowed String arguments to be deserialized as if they were Global IDs, an object injection security vulnerability.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
💎RubyGemsactivejoball versions4.2.0.beta2

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for activejob. 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.

  2. Fix

    Update activejob to 4.2.0.beta2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-mpwp-4h2m-765c is resolved across your whole dependency graph.

  3. 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.

  4. How O3 protects you

    O3 pinpoints whether GHSA-mpwp-4h2m-765c 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-mpwp-4h2m-765c. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Active Job vulnerability: An Active Job bug allowed String arguments to be deserialized as if they were Global IDs, an object injection security vulnerability.
O3 Security · Impact-Aware SCA

Is GHSA-mpwp-4h2m-765c in your dependencies?

O3 detects GHSA-mpwp-4h2m-765c across RubyGems dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.