CVE-2025-31550Network attack vector

Unauthenticated packaging-host data disclosure via bundled artifact

Published Apr 1, 2025 · Updated Apr 29, 2026

Sensitive information exposure in thom4 WP-LESS 1.9.6 and earlier allows remote attackers to read packaging-host data from a shipped file. The plugin archive mistakenly includes an automatically generated build artifact containing information about the machine used to package it. No authentication or user interaction is required, but the disclosed data describes the developer's packaging host rather than the WordPress installation.

CVSS severity5.8
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive information exposure in thom4 WP-LESS 1.9.6 and earlier allows remote attackers to read packaging-host data from a shipped file. The plugin archive mistakenly includes an automatically generated build artifact containing information about the machine used to package it. No authentication or user interaction is required, but the disclosed data describes the developer's packaging host rather than the WordPress installation.

The record

CVE
CVE-2025-31550
Published
Apr 1, 2025
Updated
Apr 29, 2026
Vendor
thom4
Product
WP-LESS
Classifications
CWE-538, CAPEC-37
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 29, 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 <=1.9.6 changes=[{"at":"1.9.7","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

thom4 · WP-LESSversion=0 <=1.9.6 changes=[{"at":"1.9.7","status":"unaffected"}]

Published CVSS scores

5.8PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-538Insertion of Sensitive Information into Externally-Accessible File or Directory
CAPEC-37Retrieve Embedded Sensitive Data

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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