PT-2026-7081 · Lighttpd · Lighttpd

Diconium · Published 2026-02-09 · Updated 2026-02-10 · CVE-2026-22903

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions lighttpd (affected versions not specified)

Description 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 lighttpd server, potentially causing it to crash and enabling remote code execution due to missing stack protections. The vulnerability is present in a modified version of the lighttpd server. The SESSIONID cookie is a vulnerable parameter.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2026-22903

Affected Products

Lighttpd

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-22903 · Security Note
• https://certvde.com/de/advisories/VDE-2026-004 · Note
• https://t.me/cveNotify/151373 · Telegram Post
• https://twitter.com/CVEnew/status/2020768412952068325 · Twitter Post
• https://twitter.com/TheHackerWire/status/2020782132109684738 · Twitter Post
• https://twitter.com/CveFindCom/status/2020802674917040352 · Twitter Post
• https://twitter.com/PurpleOps_io/status/2021094750640607256 · Twitter Post
• https://t.me/CVEtracker/44184 · Telegram Post
• https://twitter.com/PurpleOps_io/status/2021094665684988137 · Twitter Post