CVE-2026-22903
Critical · 9.8CVSS
9.8
EPSS
0.8%
Published
Feb 9, 2026
CISA due date
—
The record
An unauthenticated remote attacker can send a crafted HTTP request containing an overly long SESSIONID cookie. This can trigger a stack buffer overflow in the modified lighttpd server, causing it to crash and potentially enabling remote code execution due to missing stack protections.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
Related vulnerabilities
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