High severity · published Sep 30, 2026
CVE-2026-89193
Robin Image Optimizer 2.0.0 - 2.0.7 - Unauthenticated Stored XSS via WebP URL Delivery HTML Parser
7.5
CVSS
0.2%
EPSS
No
On KEV
Description
The Robin Image Optimizer WordPress plugin before 2.0.8 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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RI
Robin Image Optimizer ·
2.0.0 before 2.0.8 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89193
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-89193
exploit
https://wpscan.com/vulnerability/3c90d1c5-fd45-4a82-9357-504d7a0e5adc/
More from Robin Image Optimizer
4.3
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Robin Image Optimizer < 2.0.8 - Subscriber+ Plugin Settings Disclosure via fy_ajax