CVE-2026-115968

Deserialization of Untrusted Data vulnerability in Ultimate Member Ultimate Member ultimate-member…

Risk score: 64/100
CVSS: 9.8 v3.1
Published: 28 Oct 2026

Open in the live forecast Today's forecast

What to know

What it is: The Ultimate Member plugin has a deserialization of untrusted data vulnerability that allows object injection. An attacker could exploit this to gain high privileges, including the ability to read, modify, or delete sensitive data.
Affected: {'products': ['Ultimate Member'], 'packages': ['ultimate-member'], 'versions': ['from n/a through 2.13.1']}
Fix: Upgrade to a version of Ultimate Member greater than 2.13.1
Exploitation: No known exploitation

Why it is Amber

CVSS 9.8 critical
Remotely exploitable without logging in

References

https://patchstack.com/database/wordpress/plugin/ultimate-member/vulnerability/wordpress-ultimate-member-plugin-2-13-1-php-object-injection-vulnerability?_s_id=cve

Original description

Deserialization of Untrusted Data vulnerability in Ultimate Member Ultimate Member ultimate-member allows Object Injection.This issue affects Ultimate Member: from n/a through 2.13.1.

Last activity 28 Oct 2026. Patch Forecast updates every hour.