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TI-2025-05237 Aliases CVE-2025-5807GHSA-cjh8-mmgf-6pf5

Gwolle Guestbook <= 4.9.2 - Unauthenticated Stored Cross-Site Scripting via `gwolle_gb_content` Parameter

Priority LOW 27CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
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

The Gwolle Guestbook plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘gwolle_gb_content’ parameter in all versions up to, and including, 4.9.2 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00236 14th 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
mpolGwolle Guestbookup to 4.9.2—No fix listedCNA
  • Gwolle Guestbook Vendormpol Affected up to 4.9.2 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-5807
  2. 2026-10-03 Alias added: GHSA-cjh8-mmgf-6pf5

References

Other 2

  • TI-2024-10608 Chessgame Shizzle <= 1.3.0 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1
  • TI-2026-75159 Reflected cross-site scripting in Gwolle Guestbook WordPress plugin CVSS 3.1MEDIUM 6.1
  • TI-2026-86561 Stored DOM-based cross-site scripting in WP ImageViewer plugin CVSS 3.1MEDIUM 6.4

Sources

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