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TI-2026-85738 Aliases CVE-2026-110525GHSA-hp42-vhhj-w836

Stored cross-site scripting in MCB WordPress plugin via User-Agent

Priority MEDIUM 40CWE-79Published · Updated

Key facts

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

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

Summary

The MCB WordPress plugin through 1.0.0 stores request header values without sanitising or escaping them, then renders them in the administrator statistics grid (CWE-79). An unauthenticated attacker can store JavaScript through a request header such as User-Agent, and it runs in an administrator's browser session when the statistics page is viewed. The references include a link to an exploit.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

The MCB WordPress plugin through 1.0.0 does not sanitise or escape request header values before storing them and later rendering them in the administrator statistics grid, allowing unauthenticated attackers to store malicious JavaScript that executes in an administrator's browser session when the statistics page is viewed.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00432 37th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
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
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownMCBup to 1.0.0—No fix listedCNA
  • MCB VendorUnknown Affected up to 1.0.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for MCB.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Timeline

  1. 2026-11-06 Threatist record created from CVE-2026-110525
  2. 2026-11-06 Alias added: GHSA-hp42-vhhj-w836
  3. 2026-11-06 CVSS score added · CISA ADP
  4. 2026-11-06 Weakness changed · CISA ADP
  5. 2026-11-06 CISA SSVC decision points changed
  6. 2026-11-07 Priority changed: LOW → MEDIUM

References

Exploit 1

Sources

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