CVE-2026-17532
medium
📛 Threat Title
Seraphinite Accelerator <= 2.29.18 - Reflected Cross-Site Scripting
Description
The Seraphinite Accelerator plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'seraph_accel_prep' parameter in versions up to, and including, 2.29.15. This is due to the CacheExtractPreparePageParams() function using PHP's loose inequality operator (!=) to compare the expected HMAC string against the JSON-decoded 'nonce' value — supplying the JSON boolean true causes any non-empty HMAC string to compare as loosely equal, bypassing the signature check — combined with insufficient output escaping in the _CbContentFinishSkip() function, which concatenates the attacker-controlled 'selfTest' field directly into the HTML response body. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a specially crafted link. Affected software — plugin: Seraphinite Accelerator (affected: *-2.29.18). CVSS 6.1 (Medium) — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Indicators of Compromise (1)
Each indicator is enriched from the IOC database, threat-intel feed corroboration (Threat Hunt) and VirusTotal. Click one to expand.
cve
CVE-2026-17532
IOC database
- Type
- cve
- Value
CVE-2026-17532- First seen
- Last seen
- Attached to this threat
- Appears in
- 1 threat
- Description
- Seraphinite Accelerator <= 2.29.18 - Reflected Cross-Site Scripting
Threat Hunt — feed corroboration
Not present in any configured threat-intel feed.
Details From VirusTotal
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References (3)
Remediations (1)
-
Wordfence remediation: Seraphinite AcceleratorWordfence
Update to version 2.29.19, or a newer patched version
AI Forensic Analysis
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