What’s Vulnerable › Vulnerabilities

CVE-2026-113811: Algorithm::UrataniTakeda versions from 0.1.5 before 0.1.7 for Perl allow memory exhaustion via a never-cleared failure shift cache in search

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-21 · updated 2026-10-30
• Weakness: CWE-770

Description

Algorithm::UrataniTakeda versions from 0.1.5 before 0.1.7 for Perl allow memory exhaustion via a never-cleared failure shift cache in search. The failure shift is cached for each pair of trie state and text character in a field of the matcher object, and nothing clears it. A character not seen before at a given state adds an entry that lasts for the life of the matcher. An attacker who can submit text with many distinct characters to a long-lived matcher can grow its memory with each search.

Affected products

• Algorithm-UrataniTakeda: from 0.1.5 before 0.1.7 — fixed in 0.1.7

How to fix

Upgrade to a fixed version: Algorithm-UrataniTakeda 0.1.7. Check the vendor advisory for mitigations.

References

• https://github.com/robrwo/perl-Algorithm-UrataniTakeda/commit/79897ef86a5a9bb6bc381718fe977c8150bc3d5b.patch
• https://github.com/robrwo/perl-Algorithm-UrataniTakeda/security/advisories/GHSA-9vcx-647w-pr3h
• https://metacpan.org/release/RRWO/Algorithm-UrataniTakeda-v0.1.7/changes
• http://www.openwall.com/lists/oss-security/2026/10/21/27
• https://github.com/robrwo/perl-Algorithm-UrataniTakeda/security/advisories/GHSA-9vcx-647w-pr3h

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