CVE-2023-38545-libcurl-SOCKS5-heap-buffer-overflow

Disclaimer This article is intended solely for technical discussion and learning. Any direct or indirect consequences or losses caused by the use of the information provided herein shall be borne solely by the user. The author assumes no responsibility for such consequences or losses...

xzf

Introduction xzf is a simple PoC demonstrating how EXIF data can be used for command and control. xzf GETs an image from a predetermined URL, then reads the software tag for an authentication string. If the string matches, xzf will execute anything contained within the ImageDescription tag. Usage...

CVE-2026-8932

🚨 CVE-2026-8932 - The Oldest libcurl Security Bug Incomplete mTLS Configuration Matching in libcurl The oldest security vulnerability ever fixed in libcurl—remaining unnoticed for over 25 years. 📖 Overview CVE-2026-8932 is a security vulnerability in libcurl where the library may incorrectly reus...

cve-2021-42013

CVE-2021-42013 C implementation of the infamous Apache 2.4.50 exploit Compiling $ gcc cve-2021-42013.c -lcurl -o cve-2021-42013 Using $ ./cve-2021-42013 Example...

curl: curl: Information disclosure via incorrect Digest authentication header reuse

A flaw was found in curl. When libcurl performs a transfer to an HTTP origin using Digest authentication and then reuses the same connection handle for a subsequent transfer to a different origin, it may incorrectly send the authentication header intended for the first origin to the second. This...

EulerOS 2.0 SP13 : curl (EulerOS-SA-2026-4129)

According to the versions of the curl packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : 'Hello friends,', 'CVE-2026-8286: wrong STARTTLS connection reuse LOW', 'CVE-2026-8458: wrong reuse for different services LOW', 'CVE-2026-8924:...

lulzbuster

Descripción Un potente, rápido e inteligente forzador de directorios y archivos HTTPS con múltiples hilos, escrito en C sobre libcurl. Dada una URL objetivo y una lista de palabras, enumera rutas válidas lanzando peticiones HTTP concurrentes e informando las respuestas que parecen aciertos reales...

CVE-2026-8932-PoC

CVE-2026-8932 PoC Proof-of-concept reproduction of CVE-2026-8932 , an incomplete mTLS configuration matching issue in libcurl connection reuse. Overview CVE-2026-8932 affects libcurl's connection reuse logic when mutual TLS mTLS configuration changes between requests. Under vulnerable conditions,...

external_curl_AOSP10_r33_CVE-2021-22924

| | | | | | / | | | | | | | | | || | | | |/|| \| README Curl is a command line tool for transferring data specified with URL syntax. Find out how to use curl by reading the curl.1 man page or the MANUAL document. Find out how to install Curl by reading the INSTALL document. libcurl is the...

CVE-2023-44487

Please note that the above code uses the libcurl library for making HTTP requests. You need to install libcurl and link against it when compiling the code. The code is a simplified version, and you may need to adjust it based on your exact requirements and the specific behavior of the HTTP/2 atta...

thetick

The Tick A simple embedded Linux backdoor. The Tick Compiling Installing Usage Media Compiling The Tick depends only on libcurl, so make sure you have the corresponding development package. For example on Debian based distributions you would do the following: sudo apt-get install libcurl-dev Once...

CVE-2026-33752

CVE-2026-33752 CVE-2026-33752Redirect-based SSRF leading to internal network access in curlcffi Summary curlcffi does not restrict requests to internal IP ranges, and follows redirects automatically via the underlying libcurl. Because of this, an attacker-controlled URL can redirect requests to...

CVE-2026-22019-libcurl-HTTP-2-CONNECT-Tunnel-Mixup

CVE-2026-22019 – libcurl HTTP/2 CONNECT Tunnel Mixup Program Code C simulation // curlhttp2tunnelmixup.c - Simulated libcurl handling CONNECT over HTTP/2 include void handlehttp2streamint streamid // Vulnerability: after CONNECT, the proxy mixes streams with the tunneled data if streamid == 0...

EulerOS 2.0 SP15 : curl (EulerOS-SA-2026-3903)

According to the versions of the curl packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A use-after-free vulnerability exists in libcurl when an applicationx000D configures an HTTP/2 stream-dependency tree via CURLOPTSTREAMDEPENDS orx00...

EulerOS 2.0 SP15 : curl (EulerOS-SA-2026-3969)

According to the versions of the curl packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A use-after-free vulnerability exists in libcurl when an applicationx000D configures an HTTP/2 stream-dependency tree via CURLOPTSTREAMDEPENDS orx00...

curl: libcurl: Improper certificate validation due to cached TLS settings reuse

A flaw was found in libcurl. When handling secure connections TLS and reusing connection settings, libcurl could incorrectly apply a cached security setting related to certificate chain validation. This could allow libcurl to accept a server's security certificate that it should have otherwise...

curl: libcurl: Curl out of bounds read for cookie path

An out of bounds read flaw has been discovered in the curl project. Under specific conditions the path comparison logic makes curl read outside a heap buffer boundary. This bug either causes a crash or it potentially makes the comparison come to the wrong conclusion and lets the clear-text site...

Moderate: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

An update for Red Hat Hardened Images RPMs is now available. This update includes the following RPMs: curl: curl-8.22.0-1.1.hum1 aarch64, s390x, x8664 libcurl-8.22.0-1.1.hum1 aarch64, s390x, x8664 libcurl-devel-8.22.0-1.1.hum1 aarch64, s390x, x8664 libcurl-minimal-8.22.0-1.1.hum1 aarch64, s390x,...

[SECURITY] Fedora 45 Update: ocaml-curl-0.10.0-9.fc45

The Ocaml Curl Library Ocurl is an interface library for the programming language Ocaml to the networking library libcurl...

Astra Linux – Vulnerability in curl

libcurl will reuse a previously established connection even when options related to TLS or SSH have been changed, which should prevent such reuses. libcurl stores previously used connections in a connection pool, allowing for reuse if one of them matches the current setup. However, several TLS an...