CVE-2025-67202 sidekiq-cron CVE debrief

Who should care

Defenders responsible for Sidekiq-cron deployments should assess exposure and prioritize verification and potential updates to mitigate the risk of XSS attacks.

Why it matters

CVE-2025-67202 is a MEDIUM-severity XSS vulnerability in Sidekiq-cron that requires verification of exposure and potential updates to mitigate the risk of XSS attacks.

• Potential XSS attacks require monitoring and incident response readiness
• Verification of Sidekiq-cron versions and exposure is necessary
• Updating to version 2.4.0 or later may mitigate the vulnerability

Technical summary

Sidekiq-cron through 2.3.1 is vulnerable to cross-site scripting (XSS) via a crafted URL rendered from cron.erb. The vulnerability has a CVSS score of 6.1 and is classified as MEDIUM severity. The vulnerability requires verification of exposure and potential updates to mitigate the risk of XSS attacks. Sidekiq-cron is an open-source scheduling add-on for Sidekiq that is used for scheduling tasks.

Defensive priority

Defenders should prioritize verifying exposure and assessing the impact of this vulnerability on their systems, especially those using Sidekiq-cron versions up to 2.3.1.

Recommended defensive actions

• Verify Sidekiq-cron version and assess exposure
• Review and update Sidekiq-cron to version 2.4.0 or later if possible
• Monitor systems for potential XSS attacks

Evidence notes

The CVE record and NVD detail page provide information about the vulnerability, but the scope of affected versions and potential impact require further verification.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.