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Stored cross-site scripting in WP Activity Log 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

The WP Activity Log plugin for WordPress is affected in all versions up to and including 5.6.1. Insufficient input sanitization and output escaping (CWE-79) let an unauthenticated attacker store arbitrary web scripts in pages. The scripts run whenever a user accesses an injected page.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

The WP Activity Log plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 5.6.1 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 0.00229 13th 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
MelapressWP Activity Logup to 5.6.1—No fix listedCNA
  • WP Activity Log VendorMelapress Affected up to 5.6.1 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for WP Activity Log.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Timeline

  1. 2026-10-31 Threatist record created from CVE-2026-120075
  2. 2026-10-31 Alias added: GHSA-2c56-765v-m493
  3. 2026-11-01 Priority changed: MEDIUM → LOW
  4. 2026-11-01 CISA SSVC decision points changed

References

  • TI-2023-27808 WordPress WP Activity Log Plugin <= 4.6.1 is vulnerable to Cross Site Scripting (XSS) CVSS 3.1HIGH 7.1
  • TI-2024-09166 Website File Changes < 2.1.1 - Authenticated SQL Injection CVSS 3.1MEDIUM 5.4
  • TI-2024-09289 Website File Changes < 2.1.0 - Admin+ Authenticated SQL Injection CVSS 3.1MEDIUM 4.1
  • TI-2026-39609 WordPress WP Activity Log plugin <= 5.6.3.1 - PHP Object Injection vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2025-06268 Authentication bypass in Melapress Login Security CVSS 3.1CRITICAL 9.8
  • TI-2025-02511 Missing authorization in MelaPress Login Security Premium CVSS 3.1HIGH 8.2
See all 31 →

Sources