CVE-2026-22904 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 denial‑of‑service condition and possible remote code execution...

CVE-2026-22904 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 denial‑of‑service condition and possible remote code execution...

CVE-2026-22904

CVE-2026-22904 affects lighttpd, where 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. This can result in a denial-of-service condition and potentially r...

CVE-2026-22903

Affects lighttpd-based server variants (modified lighttpd) where an unauthenticated remote attacker can send a crafted HTTP request with an overly long SESSIONID cookie. The underlying issue is a stack buffer overflow, triggered by the oversized cookie, leading to server crashes and potentially r...

CVE-2026-22903 Stack Overflow via SESSIONID Cookie in lighttpd

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...

CVE-2026-22903

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...

PT-2026-7081

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...

CVE-2026-22903: Stack-based Buffer Overflow

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...

📄 Lighttpd 1.4.66 FastCGI Resource Exhaustion

Proof of concept exploit for a resource exhaustion vulnerability that exists in lighttpd versions 1.4.56 through 1.4.66 affecting FastCGI and other gateway backends. When processing HTTP/1.1 requests using chunked transfer encoding with request-body streaming enabled, an anomalous client disconne...

📄 Lighttpd 1.4.66 Resource Leak Denial of Service

Lighttpd versions 1.4.56 through 1.4.66 has a resource exhaustion vulnerability affecting gateway backends such as FastCGI. When handling an HTTP/1.1 request with chunked transfer encoding and request-body streaming enabled, lighttpd mishandles an anomalous client disconnect RDHUP / half-closed T...

Lighttpd 1.4.56 - 1.4.66 Resource Leak Denial of Service PoC

Summary lighttpd pronounced /lighty/ is a secure, fast, compliant, and very flexible web server that has been optimized for high-performance environments. lighttpd uses memory and CPU efficiently and has lower resource use than other popular web servers. Its advanced feature-set FastCGI, CGI, Aut...

CVE-2018-14067

Green Packet WiMax DV-360 2.10.14-g1.0.6.1 devices allow Command Injection, with unauthenticated remote command execution, via a crafted payload to the HTTPS port, because lighttpd listens on all network interfaces including the external Internet by default. NOTE: this may overlap CVE-2017-9980...

Log File Handler component

The vulnerability of the Log File Handler component in the modauth web server module of the lighttpd server is related to the lack of measures taken to eliminate special elements in the log files. Exploiting this vulnerability can allow an attacker operating remotely to gain access and modify...

Linux Distros Unpatched Vulnerability : CVE-2025-12642

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - lighttpd1.4.80 incorrectly merged trailer fields into headers after http request parsing. This behavior can be exploited to conduct HTTP Header Smuggling attack...

CVE-2025-12642

lighttpd1.4.80 incorrectly merged trailer fields into headers after http request parsing. This behavior can be exploited to conduct HTTP Header Smuggling attacks. Successful exploitation may allow an attacker to: Bypass access control rules Inject unsafe input into backend logic that trusts reque...

Lighttpd 1.4.80 HTTP Request/Response Smuggling Vulnerability

Lighttpd is prone to an HTTP request/response smuggling vulnerability. SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE =...

CVE-2025-12642

lighttpd1.4.80 incorrectly merged trailer fields into headers after http request parsing. This behavior can be exploited to conduct HTTP Header Smuggling attacks. Successful exploitation may allow an attacker to: Bypass access control rules Inject unsafe input into backend logic that trusts reque...

CVE-2025-12642

lighttpd1.4.80 incorrectly merged trailer fields into headers after http request parsing. This behavior can be exploited to conduct HTTP Header Smuggling attacks. Successful exploitation may allow an attacker to: Bypass access control rules Inject unsafe input into backend logic that trusts reque...

UBUNTU-CVE-2025-12642

lighttpd1.4.80 incorrectly merged trailer fields into headers after http request parsing. This behavior can be exploited to conduct HTTP Header Smuggling attacks. Successful exploitation may allow an attacker to: Bypass access control rules Inject unsafe input into backend logic that trusts reque...

CVE-2025-12642

Lighttpd 1.4.80 is affected by an HTTP header smuggling vulnerability caused by incorrectly merging trailer fields into headers during request parsing. This can enable bypassing access controls and injecting unsafe input into backend logic that relies on headers, with potential for HTTP Request S...