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CVE-2025-67202: Sidekiq-cron is vulnerable to a cross-site scripting (xss) vulnerability via crafted URL

May 7, 2026 (updated May 29, 2026)

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.

References

  • github.com/advisories/GHSA-xv9c-mjw8-79gf
  • github.com/rubysec/ruby-advisory-db/blob/master/gems/sidekiq-cron/CVE-2025-67202.yml
  • github.com/sidekiq-cron/sidekiq-cron/commit/7b4ae4822f93ef4646f5cb55500ca4e25662db7c
  • github.com/sidekiq-cron/sidekiq-cron/issues/569
  • github.com/sidekiq-cron/sidekiq-cron/pull/568
  • github.com/sidekiq-cron/sidekiq-cron/releases/tag/v2.4.0
  • nvd.nist.gov/vuln/detail/CVE-2025-67202

Code Behaviors & Features

Detect and mitigate CVE-2025-67202 with GitLab Dependency Scanning

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Affected versions

All versions before 2.4.0

Fixed versions

  • 2.4.0

Solution

Upgrade to version 2.4.0 or above.

Impact 6.1 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Learn more about CVSS

Weakness

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Source file

gem/sidekiq-cron/CVE-2025-67202.yml

Spotted a mistake? Edit the file on GitLab.

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