WebP Express Plugin up to 0.25.15 on WordPress HTML Parser HTML injection

Summaryinfo

A vulnerability classified as problematic has been found in WebP Express Plugin up to 0.25.15. Affected is an unknown function of the component HTML Parser. Performing a manipulation results in HTML injection. This vulnerability was named CVE-2026-97328. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in WebP Express Plugin up to 0.25.15. It has been classified as problematic. This affects some unknown processing of the component HTML Parser. The manipulation with an unknown input leads to a html injection vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

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.

The advisory is shared at wpscan.com. This vulnerability is uniquely identified as CVE-2026-97328 since 09/24/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 0.25.16 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-108020). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• WebP Express Plugin

Version

• 0.25.0
• 0.25.1
• 0.25.2
• 0.25.3
• 0.25.4
• 0.25.5
• 0.25.6
• 0.25.7
• 0.25.8
• 0.25.9
• 0.25.10
• 0.25.11
• 0.25.12
• 0.25.13
• 0.25.14
• 0.25.15

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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