CVE-2026-96752 json
Zero Spam for WordPress <= 5.7.10 - Unauthenticated Stored Cross-Site Scripting via Nested POST Array Keys via Contact Form 7 Integration
published 2026-09-25 45 d ago modified 2026-09-25 44 d ago also EUVD-2026-86589
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 15%
- public exploits
- 0
- none known
Summary
The Zero Spam for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Nested POST Array Keys via Contact Form 7 Integration in all versions up to, and including, 5.7.10 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload is delivered by submitting a Contact Form 7 request with a nested POST array key containing arbitrary HTML or JavaScript — PHP parses the field name into a nested array key, which is stored verbatim in the zerospam_log.submission_data column when Zero Spam flags the submission as spam due to the absence of the zerospam_david_walsh_key field.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 44 d ago
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- bmarshall511 Zero Spam for WordPress
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/01540d78-ae46-4556-9a7f-3f8b8dbbcbd7?source=cve
- plugins.trac.wordpress.org /browser/zero-spam/tags/5.7.10/includes/templates/admin-modal-details.php#L200
- plugins.trac.wordpress.org /browser/zero-spam/tags/5.7.10/modules/contactform7/class-contactform7.php#L85
- plugins.trac.wordpress.org /browser/zero-spam/tags/5.7.10/core/class-utilities.php#L65
- plugins.trac.wordpress.org /browser/zero-spam/tags/5.7.10/includes/class-db.php#L442
- plugins.trac.wordpress.org /changeset?reponame=&old=3709762%40zero-spam&new=3709762%40zero-spam
Sources
- CVE List CVE-2026-96752
- NVD CVE-2026-96752
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.