CYBERSECURITYTRACKER
Vulnerabilities

CVE-2026-112921

Weakness: CWE-488

What it is

Reported

Robots::Validate versions from 0.4.3 before 0.4.10 for Perl report clients as imposter robots when User-Agent matcher state carries over from a previous request. Each Robots::Validate object holds one pure-Perl Aho-Corasick search machine and feeds every User-Agent into it without resetting its state. A User-Agent that ends part-way through a robot name leaves the machine mid-match, so the next User-Agent checked by the same object can complete that name. That client's address is then checked against the robot's DNS rule, which it fails.…

Source reported · Source: CVE record · Source description excerpt; complete tracked detail loads below.
Dates
Source last published: · Source last updated:

What is affected

Not reported

Not reported by tracked sources.

Urgency and basis

Tracker computed

Track

Current priority score and EPSS: loading from the tracker record. They are read when this page loads and are not shown without JavaScript. They change daily and are not part of "Source last updated".

Tracker decision tier from the evidence detailed below
Dates
Source last updated:

Exploitation evidence

Not reported

Not reported by tracked sources.

What to do

Not reported

Not reported by tracked sources.

Tracker inference. Guidance from the decision tier: No action now. Remediate within standard update timelines. Monitor for change.

Detection and validation

Mapped metadata availability only. These signals do not change priority.

Sigma, Atomic, Nuclei, and Metasploit: none mapped by tracked sources.

  • Sigma

    Not mapped by tracked sources.

  • Atomic

    Not mapped by tracked sources.

  • Nuclei

    Not mapped by tracked sources.

  • Metasploit

    Not mapped by tracked sources.

Evidence detail

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Glossary

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