CVE-2026-13048Network attack vector

Remote code execution via evaluated catalog header

Published Aug 13, 2026 · Updated Aug 13, 2026

Eval injection in Data::MuForm::Localizer through 0.05 allows remote attackers to execute Perl via a crafted message catalog header. load_lexicon accepts parent-directory segments in the language attribute and loads the resulting .po path; extract_header_msgstr then evaluates its Plural-Forms expression as Perl. Exploitation requires a request-controlled locale and an attacker-controlled readable .po file, and code runs as the application user.

CVSS severityUnavailable
Unscored
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Eval injection in Data::MuForm::Localizer through 0.05 allows remote attackers to execute Perl via a crafted message catalog header. load_lexicon accepts parent-directory segments in the language attribute and loads the resulting .po path; extract_header_msgstr then evaluates its Plural-Forms expression as Perl. Exploitation requires a request-controlled locale and an attacker-controlled readable .po file, and code runs as the application user.

The record

CVE
CVE-2026-13048
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
Data-MuForm
Product
Data::MuForm::Localizer
Classifications
CWE-95, CWE-22, T1059
Attack vector
network
Privileges
Unavailable

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 <=0.05

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Data-MuForm · Data::MuForm::Localizerversion=0 <=0.05

Published CVSS scores

No CVSS assessment is available in this record.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-95Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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