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💎 RubyGems

GHSA-xv9c-mjw8-79gf

MEDIUM

GHSA-xv9c-mjw8-79gf is a medium-severity (CVSS 6.1) vulnerability in sidekiq-cron. O3 Security confirms whether GHSA-xv9c-mjw8-79gf is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Sidekiq-cron is vulnerable to a cross-site scripting (xss) vulnerability via crafted URL

Also known asCVE-2025-67202
Published
May 7, 2026
Updated
May 29, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

Blast Radius

1 pkg affected
💎sidekiq-cron

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

Sidekiq-cron thru 2.3.1, an open-source scheduling add-on for Sidekiq, is vulnerable to a cross-site scripting (xss) vulnerability via crafted URL being rended from cron.erb.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
💎RubyGemssidekiq-cronall versions2.4.0

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for sidekiq-cron. 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 sidekiq-cron to 2.4.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xv9c-mjw8-79gf 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-xv9c-mjw8-79gf 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-xv9c-mjw8-79gf. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Sidekiq-cron thru 2.3.1, an open-source scheduling add-on for Sidekiq, is vulnerable to a cross-site scripting (xss) vulnerability via crafted URL being rended from cron.erb.
O3 Security · Impact-Aware SCA

Is GHSA-xv9c-mjw8-79gf in your dependencies?

O3 detects GHSA-xv9c-mjw8-79gf across RubyGems dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.