Vulnerability · Published Oct 22, 2026 · Assigned by WPScan

CVE-2026-97328WebP Express < 0.25.16 - Unauthenticated Stored XSS via Alter HTML Parser

High 7.5

In plain English

A high-severity cross-site scripting in WebP Express from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.3%top 79.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The WebP Express WordPress plugin before 0.25.16 does not escape values that its bundled HTML parser re-emits into element attributes when a non-default image delivery mode is enabled, allowing unauthenticated users to submit content that is stored and later executed as Cross-Site Scripting in the browser of any user viewing an affected page, including administrators.

Affected products (as reported)

Vendor	Product	Versions
Unknown	WebP Express	0 – before 0.25.16

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References

https://wpscan.com/vulnerability/f44cb329-fb2e-4fb1-b878-8b52b0c769cc/ exploit, vdb-entry, technical-description