CVE-2026-91011 — MEDIUM (6.8)

Vulnerability Description

The EWWW Image Optimizer WordPress plugin before 8.7.7 does not properly escape image attribute values when it rewrites page output, allowing authenticated users with author-level access and above to inject arbitrary JavaScript that is stored in published content and executes in the browser of any user who later views the affected page.

CVSS Score

6.8

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-79

References

https://wpscan.com/vulnerability/334f14d5-f97b-4ec5-9b42-bb0803ae1668/

FAQ

What is CVE-2026-91011?

CVE-2026-91011 is a vulnerability with a CVSS score of 6.8 (MEDIUM). The EWWW Image Optimizer WordPress plugin before 8.7.7 does not properly escape image attribute values when it rewrites page output, allowing authenticated users with author-level access and above to ...

How severe is CVE-2026-91011?

CVE-2026-91011 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-91011?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.