Robots-Validate (0.4.3-0.4.9) - CraftedSignal Threat Feedhttps://feed.craftedsignal.io/products/robots-validate-0.4.3-0.4.9/Trending threats, MITRE ATT&CK coverage, and detection metadata. Fed continuously.Hugoenhello@craftedsignal.iohello@craftedsignal.ioThu, 22 Oct 2026 01:36:26 +0000https://feed.craftedsignal.io/favicon-32x32.pngCraftedSignal Threat Feedhttps://feed.craftedsignal.io/3232https://feed.craftedsignal.io/favicon.svgRobots-Validate: User-Agent matcher state leakage (CVE-2026-112921)https://feed.craftedsignal.io/briefs/2026-10-robots-validate-state-leak/Thu, 22 Oct 2026 01:36:26 +0000hello@craftedsignal.iohttps://feed.craftedsignal.io/briefs/2026-10-robots-validate-state-leak/The Robots-Validate Perl module (versions 0.4.3 through 0.4.9) fails to clear User-Agent matcher state between requests, causing legitimate clients to be incorrectly classified as imposter robots.The Robots-Validate Perl module, specifically versions 0.4.3 through 0.4.9, contains a flaw where the internal state of the User-Agent matcher persists across consecutive requests. This leakage can result in false positive identifications of legitimate clients as imposter robots. The issue is resolved in version 0.4.10.

Impact

The vulnerability may cause unexpected denial of service or access rejection for legitimate web clients when using the affected module for request validation.

Recommendation

  • Audit systems for usage of the Robots-Validate Perl module.
  • Upgrade the Robots-Validate module to version 0.4.10 or later.
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