Stored XSS in WP Meteor Website Speed Optimization Addon
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The WP Meteor Website Speed Optimization Addon plugin for WordPress is affected in all versions up to and including 3.4.18. Missing input sanitization and output escaping (CWE-79) let an unauthenticated attacker store a script in the comment author name field. The script runs in pages that users open once the comment passes WordPress comment moderation and is displayed.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
The WP Meteor Website Speed Optimization Addon plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Author Name in all versions up to, and including, 3.4.18 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 via the comment author name field, which must clear WordPress's comment moderation workflow before being displayed, though this represents a display prerequisite rather than any sanitization control.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| aguidrevitch | WP Meteor Website Speed Optimization Addon | up to 3.4.18 | — | No fix listed | CNA |
- WP Meteor Website Speed Optimization Addon Vendoraguidrevitch Affected up to 3.4.18 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for WP Meteor Website Speed Optimization Addon.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-10 Threatist record created from CVE-2026-96572
- 2026-10-10 Alias added: GHSA-6gm5-6q7x-rq5h
- 2026-10-11 CISA SSVC decision points changed
- 2026-10-11 Priority changed: MEDIUM → LOW
References
Other 7
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f54e358c-3bdf-426a-854a-d1bc8ff19afd?source=cve
- https://plugins.trac.wordpress.org/browser/wp-meteor/tags/3.4.18/blocker/FirstInteraction/UltimateReorder.php#L178
- https://plugins.trac.wordpress.org/browser/wp-meteor/tags/3.4.18/blocker/FirstInteraction/UltimateReorder.php#L169
- https://plugins.trac.wordpress.org/browser/wp-meteor/tags/3.4.18/frontend/Rewrite.php#L93
- https://plugins.trac.wordpress.org/browser/wp-meteor/tags/3.4.18/frontend/Rewrite.php#L41
- https://plugins.trac.wordpress.org/changeset/3726637
- https://plugins.trac.wordpress.org/changeset/3726637/wp-meteor/trunk/blocker/FirstInteraction/UltimateReorder.php
More aguidrevitch vulnerabilities
- TI-2026-02495 WP Meteor Website Speed Optimization Addon <= 3.4.16 - Unauthenticated Stored Cross-Site Scripting via Comment CVSS 3.1MEDIUM 6.1
Sources
- CVE-2026-96572 · CVE Program
- CVE-2026-96572 · NVD
- FIRST EPSS
- GHSA-6gm5-6q7x-rq5h · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences