CVE-2026-13051Network attack vector

Method dispatch and resource exhaustion via template injection

Published Aug 13, 2026 · Updated Aug 13, 2026

Template injection in Form::Processor 0.06 through 1.162360 allows attackers to exhaust memory or dispatch methods via crafted HtmlArea markup. HtmlArea validation passes attacker-influenced HTML::Tidy diagnostics to add_error as Locale::Maketext templates, causing bracket notation to be compiled and invoked. Applications exposing an HtmlArea field can throw an uncaught exception or exhaust memory; custom language handles can also expose side-effecting public methods.

CVSS severity9.1
Critical
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Template injection in Form::Processor 0.06 through 1.162360 allows attackers to exhaust memory or dispatch methods via crafted HtmlArea markup. HtmlArea validation passes attacker-influenced HTML::Tidy diagnostics to add_error as Locale::Maketext templates, causing bracket notation to be compiled and invoked. Applications exposing an HtmlArea field can throw an uncaught exception or exhaust memory; custom language handles can also expose side-effecting public methods.

The record

CVE
CVE-2026-13051
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
Bill Moseley
Product
Form::Processor
Classifications
CWE-470, CWE-1336, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.06 <=1.162360

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Bill Moseley · Form::Processorversion=0.06 <=1.162360

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-470Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
CWE-1336Improper Neutralization of Special Elements Used in a Template Engine
T1499.003Application Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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