Liferay Portal: Cookie Parsing Length Mishandle Enables Stack Buffer Overflow
CVE-2026-22904 Published on February 9, 2026
Stack Overflow via Oversized Cookie Fields in lighttpd
Improper length handling when parsing multiple cookie fields (including TRACKID) allows an unauthenticated remote attacker to send oversized cookie values and trigger a stack buffer overflow, resulting in a denialofservice condition and possible remote code execution.
Vulnerability Analysis
CVE-2026-22904 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is a Stack Overflow Vulnerability?
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
CVE-2026-22904 has been classified to as a Stack Overflow vulnerability or weakness.
Products Associated with CVE-2026-22904
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Affected Versions
WAGO 0852-1322:- Version 0.0.0, <= 2.64 is affected.
- Version 0.0.0, <= 2.64 is affected.
- Version 2.64 is affected.
- Version 2.64 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.