CVE-2026-4350Public exploitNetwork attack vector

Authenticated file deletion via unsanitized delete path

Published Apr 3, 2026 · Updated Apr 3, 2026

Path traversal in forgemedia LLC Perfmatters 2.5.9.1 and earlier allows remote authenticated users to delete arbitrary server files. PMCS::action_handler() concatenates the unsanitized $_GET['delete'] value with its storage path and passes the result to unlink(). Subscriber-level access is sufficient; deleting wp-config.php interrupts the site and exposes the WordPress installation workflow to takeover.

CVSS severity8.1
High
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in forgemedia LLC Perfmatters 2.5.9.1 and earlier allows remote authenticated users to delete arbitrary server files. PMCS::action_handler() concatenates the unsanitized $_GET['delete'] value with its storage path and passes the result to unlink(). Subscriber-level access is sufficient; deleting wp-config.php interrupts the site and exposes the WordPress installation workflow to takeover.

The record

CVE
CVE-2026-4350
Published
Apr 3, 2026
Updated
Apr 3, 2026
Vendor
forgemedia LLC
Product
Perfmatters
Classifications
CWE-22, T1485
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 3, 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 <=2.5.9.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

forgemedia LLC · Perfmattersversion=0 <=2.5.9.1

Published CVSS scores

8.1WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1485Data Destruction

Public exploit references

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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