Deserialization Vulnerability in AncoraThemes Umberto Theme for WordPress
CVE-2025-31423

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Umberto
Vendor
CVE Published:
23 May 2025

What is CVE-2025-31423?

A vulnerability in AncoraThemes Umberto allows for deserialization of untrusted data, potentially leading to object injection attacks. This flaw impacts versions ranging from n/a to 1.2.8, making it critical for users to take precautions and update their installation to mitigate the risk.

Affected Version(s)

Umberto <= 1.2.8

References

https://patchstack.com/database/wordpress/theme/umberto/v...
vdb-entry

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Tran Nguyen Bao Khanh (VCI - VNPT Cyber Immunity) (Patchstack Alliance)
.
CVE-2025-31423 : Deserialization Vulnerability in AncoraThemes Umberto Theme for WordPress