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TI-2026-86170 Aliases CVE-2026-119070GHSA-m3mp-7pq7-5q6h

Stored cross-site scripting in Optimole WordPress plugin

Priority LOW 31CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Optimole through 4.2.17 is affected. Its comment parameter lacks input sanitization and output escaping, so stored scripts are decoded and rendered (CWE-79). An unauthenticated attacker can inject scripts that run when a user opens an affected page. The flaw requires the plugin to be connected with a CDN key and secret and the image replacer enabled, the default after setup.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Description from the CNA

The Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 4.2.17 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploit requires the plugin to be in its normal connected state (cdn_key and cdn_secret configured) with the image replacer enabled, which is the default post-setup configuration; the stored payload bypasses all WordPress comment sanitization filters because it contains no HTML metacharacters at storage time — the characters are produced only by Optimole's own decoder at render time.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00259 17th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
optimoleOptimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimizationup to 4.2.17—No fix listedCNA
  • Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization Vendoroptimole Affected up to 4.2.17 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for the Optimole plugin (Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization).

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Timeline

  1. 2026-11-07 Threatist record created from CVE-2026-119070
  2. 2026-11-07 Alias added: GHSA-m3mp-7pq7-5q6h
  3. 2026-11-07 CISA SSVC decision points changed
  4. 2026-11-07 Priority changed: MEDIUM → LOW

References

Other 7

  • TI-2026-04558 Optimole <= 4.2.2 - Unauthenticated Stored Cross-Site Scripting via Srcset Descriptor Parameter CVSS 3.1HIGH 7.2
  • TI-2026-01518 Super Page Cache <= 5.2.2 - Unauthenticated Stored Cross-Site Scripting via Activity Log CVSS 3.1HIGH 7.2
  • TI-2026-86193 Stored cross-site scripting in Optimole WordPress plugin CVSS 3.1HIGH 7.2
  • TI-2026-53980 Optimole <= 4.2.10 - Unauthenticated Stored Cross-Site Scripting via 'a' (above_fold_images) Parameter CVSS 3.1HIGH 7.2
  • TI-2026-86192 Stored cross-site scripting in Optimole WordPress plugin via comments CVSS 3.1HIGH 7.2
  • TI-2026-41497 WordPress Optimole plugin <= 4.2.7 - Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences