CVE-2025-36418 Multiple vulnerabilities found in IBM ApplinX.

High 7.3 Published 20 Jan 2026 Updated 20 Jan 2026

Attackers can craft or modify JWT tokens to impersonate users and escalate privileges in IBM ApplinX.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-36418?

CVE-2025-36418 is a high-severity authentication bypass vulnerability in IBM ApplinX, published on 20 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

IBM ApplinX 11.1 is vulnerable due to a privilege escalation vulnerability due to improper verification of JWT tokens. An attacker may be able to craft or modify a JSON web token in order to impersonate another user or to elevate their privileges.

Weakness: CWE-347

Which versions are affected by CVE-2025-36418?

It affects 1 product.

Products include Ibm Applinx.

How do I fix CVE-2025-36418?

No fix has been published for CVE-2025-36418 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2025-36418 being exploited?

There is no known exploitation of CVE-2025-36418 in the wild and no public exploit code.

Sources

Also known as GHSA-c5cv-q9qq-59q9.