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TI-2026-39609 Aliases CVE-2026-54806GHSA-5hfr-j85r-7cqx

WordPress WP Activity Log plugin <= 5.6.3.1 - PHP Object Injection vulnerability

Priority MEDIUM 50CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

Unauthenticated PHP Object Injection in WP Activity Log <= 5.6.3.1 versions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00699 53rd 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
Yes
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
MelapressWP Activity Logup to 5.6.3.1—No fix listedCNA
  • WP Activity Log VendorMelapress Affected up to 5.6.3.1 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-2026-54806
  2. 2026-10-03 Alias added: GHSA-5hfr-j85r-7cqx
  3. 2026-10-23 EPSS moved to the 50th–90th percentile

References

Other 1

  • 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-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
  • TI-2024-01878 WP Activity Log Premium <= 4.6.4 - Authenticated (Subscriber+) SQL Injection CVSS 3.1HIGH 8.8
See all 31 →

Sources

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