---
id: CVE-2026-113811
title: >-
  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
summary: >-
  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 m…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: adp
cwe:
  - CWE-770
product: Algorithm-UrataniTakeda
affected:
  - Algorithm-UrataniTakeda >= 0.1.5 < 0.1.7
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-30T15:49:45.476740Z'
exploitAvailable: true
published: '2026-10-21'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T15:49:54.511Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-113811'
references:
  - url: >-
      https://github.com/robrwo/perl-Algorithm-UrataniTakeda/security/advisories/GHSA-9vcx-647w-pr3h
  - url: 'https://metacpan.org/release/RRWO/Algorithm-UrataniTakeda-v0.1.7/changes'
  - url: >-
      https://github.com/robrwo/perl-Algorithm-UrataniTakeda/commit/79897ef86a5a9bb6bc381718fe977c8150bc3d5b.patch
tags:
  - cve.org
  - exploit-available
epss: 0.00605
epssPercentile: 0.49077
ingestedAt: '2026-10-21T21:13:32.718Z'
---

## Overview

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

- `Algorithm-UrataniTakeda >= 0.1.5 < 0.1.7`

## Remediation

Upgrade to Algorithm-UrataniTakeda 0.1.7 or later.