The QA Assistants – Driven by data plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 5.3.0…
CVE-2026-87112
The QA Assistants – Driven by data plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 5.3.0 via the 'dleventver' parameter. This is due to unrestricted PHP deserialization via wrapunserializestatic() calling unserialize() without an allowedclasses restriction, combined with serializeescape() failing to sanitize path traversal sequences in the rawname parameter. This makes it possible for unauthenticated attackers to inject a PHP Object. The Guzzle FileCookieJar gadget present in the plugin's bundled Composer dependencies can be leveraged to perform an Arbitrary File Write, writing attacker-controlled content to an attacker-chosen filename, which can result in Remote Code Execution. Exploitation requires triggering the qahmcrondatamanage scheduled event via wp-cron.php to invoke the deserialization sink against a planted queue file, but this endpoint requires no authentication and fires automatically on a two-minute schedule.
Assessment
- CVSS
- 8.8 (v3.1)
- Severity
- High
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 7 November 2026
- Last updated
- 7 November 2026
- Affected
- quarka · QA Assistants – Driven by data
- Assigner
- Wordfence
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
At the source
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/76c5b5f1-a04b-4219-b8c0-ee53139fa787?source=cve
- https://plugins.trac.wordpress.org/browser/qa-heatmap-analytics/tags/5.2.0.1/class-qahm-base.php#L701
- https://plugins.trac.wordpress.org/browser/qa-heatmap-analytics/tags/5.2.0.1/class-qahm-admin-page-realtime.php#L183
- https://plugins.trac.wordpress.org/browser/qa-heatmap-analytics/tags/5.2.0.1/vendor/guzzlehttp/guzzle/src/Cookie/FileCookieJar.php#L38
- https://plugins.trac.wordpress.org/browser/qa-heatmap-analytics/tags/5.2.0.1/class-qahm-cron-proc.php#L698
- https://plugins.trac.wordpress.org/browser/qa-heatmap-analytics/tags/5.2.0.1/class-qahm-core-base.php#L780
- https://plugins.trac.wordpress.org/browser/qa-heatmap-analytics/tags/5.2.0.1/qahm-ajax.php#L319
- https://plugins.trac.wordpress.org/browser/qa-heatmap-analytics/tags/5.2.0.1/class-qahm-behavioral-data.php#L770
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3728466%40qa-heatmap-analytics&new=3728466%40qa-heatmap-analytics
Community proofs of concept
No community proof of concept yet. If you have one for a published vulnerability and the right to share it, add it below — it will appear here once reviewed.
Submit a proof of concept
Only for publicly disclosed vulnerabilities, and only material from testing you were authorised to perform. This platform does not buy, sell, or broker exploits — see earning from vulnerability research for legitimate bounty programs. Submissions are reviewed before they appear. Text only; do not include live credentials, personal data, or anything targeting systems you are not permitted to test.
Query this programmatically
Agents can read this through the MCP endpoint, or over HTTP:
curl https://cve.zerocrew.in/api/cve/CVE-2026-87112