CVE-2026-27544Network attack vector

Unauthenticated code execution via generated PHP files

Published Aug 13, 2026 · Updated Aug 13, 2026

Code injection in QuarkA QA Assistants 5.2.0.0 and earlier allows remote attackers to execute PHP code without authentication. The plugin writes visitor analytics and session data into generated PHP files with WP_Filesystem::put_contents without an execution guard. A network request can reach this file-write path without authentication; requesting a generated file executes the stored PHP on the WordPress host.

CVSS severity10.0
Critical
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in QuarkA QA Assistants 5.2.0.0 and earlier allows remote attackers to execute PHP code without authentication. The plugin writes visitor analytics and session data into generated PHP files with WP_Filesystem::put_contents without an execution guard. A network request can reach this file-write path without authentication; requesting a generated file executes the stored PHP on the WordPress host.

The record

CVE
CVE-2026-27544
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
QuarkA
Product
QA Assistants
Classifications
CWE-94, CAPEC-253, T1059
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=n/a <=5.2.0.0 changes=[{"at":"5.2.0.1","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

QuarkA · QA Assistantsversion=n/a <=5.2.0.0 changes=[{"at":"5.2.0.1","status":"unaffected"}]

Published CVSS scores

10.0PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/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.

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-94Improper Control of Generation of Code ('Code Injection')
CAPEC-253Remote Code Inclusion
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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