curl: Path Traversal in curl file:// Protocol Handler Allows Unauthorized File Access

Summary During my manual review of the file path handling logic in curl's source code, I noticed the absence of proper validation for directory traversal sequences, which I then verified through practical testing. I discovered that curl allows unauthorized access to arbitrary files through the...

curl: Alt-Svc bypasses credential leak protection (CVE-2018-1000007)

Summary I found a bug where curl's Alt-Svc implementation fails to strip sensitive authentication headers Authorization and Cookies when remapping a connection to a different host or port. This essentially bypasses the security fix for CVE-2018-1000007. While auditing the code, I noticed that...

curl: CRLF Injection in Gopher Protocol (`lib/gopher.c`)

Control characters slip through during URL handling in curl’s Gopher setup. Though null bytes get blocked by the REJECTZERO setting, returns and line feeds remain permitted. A specially built address using percent-encoded breaks - like %0D%0A - opens room for command insertion. Because of how...

curl: HTTP Request Smuggling and SSRF via CRLF Injection in Curl_add_custom_headers

Summary: A lack of CRLF validation in Curladdcustomheaders at lib/http.c:1761 allows users to inject arbitrary HTTP headers. This violation of RFC 7230 §3.2.4 leads to HTTP Request Smuggling and potential SSRF bypass. AI Disclosure: I utilized an AI assistant to aid in the initial code analysis a...

CVE-2025-34469

Cowrie versions prior to 2.9.0 contain a server-side request forgery SSRF vulnerability in the emulated shell implementation of wget and curl. In the default emulated shell configuration, these command emulations perform real outbound HTTP requests to attacker-supplied destinations. Because no...

CVE-2025-34469

Cowrie versions prior to 2.9.0 contain a server-side request forgery SSRF vulnerability in the emulated shell implementation of wget and curl. In the default emulated shell configuration, these command emulations perform real outbound HTTP requests to attacker-supplied destinations. Because no...

CVE-2025-34469

CVE-2025-34469 affects Cowrie before 2.9.0. In emulated shell mode, the wget and curl commands perform real outbound HTTP requests, enabling unauthenticated attackers to generate unbounded traffic to arbitrary targets. This SSRF can turn the Cowrie honeypot into a denial-of-service amplification ...

CVE-2025-34469 Cowrie < 2.9.0 Unrestricted wget/curl Emulation Enables SSRF-Based DDoS Amplification

Cowrie versions prior to 2.9.0 contain a server-side request forgery SSRF vulnerability in the emulated shell implementation of wget and curl. In the default emulated shell configuration, these command emulations perform real outbound HTTP requests to attacker-supplied destinations. Because no...

EUVD-2025-204642

Cowrie versions prior to 2.9.0 contain a server-side request forgery SSRF vulnerability in the emulated shell implementation of wget and curl. In the default emulated shell configuration, these command emulations perform real outbound HTTP requests to attacker-supplied destinations. Because no...

CVE-2025-34469 Cowrie < 2.9.0 Unrestricted wget/curl Emulation Enables SSRF-Based DDoS Amplification

Cowrie versions prior to 2.9.0 contain a server-side request forgery SSRF vulnerability in the emulated shell implementation of wget and curl. In the default emulated shell configuration, these command emulations perform real outbound HTTP requests to attacker-supplied destinations. Because no...

CVE-2025-34469 Cowrie < 2.9.0 Unrestricted wget/curl Emulation Enables SSRF-Based DDoS Amplification

Cowrie versions prior to 2.9.0 contain a server-side request forgery SSRF vulnerability in the emulated shell implementation of wget and curl. In the default emulated shell configuration, these command emulations perform real outbound HTTP requests to attacker-supplied destinations. Because no...

curl: A quiet New Year wish for security researchers

Hi curl Security Team and fellow security researchers, Sorry in advance if this isn’t a traditional security report. I know your time is valuable, and I truly respect the work you all do. I just wanted to take a quiet moment to wish every security researcher here those who report issues, those wh...

Huawei EulerOS: Security Advisory for curl (EulerOS-SA-2025-2607)

The remote host is missing an update for the Huawei EulerOS 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 ifdescription...

EulerOS Virtualization 2.13.0 : curl (EulerOS-SA-2025-2607)

According to the versions of the curl packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : 1. A cookie is set using the secure keyword for https://target 2. curl is redirected to or otherwise made to speak with http://target...

Huawei EulerOS: Security Advisory for curl (EulerOS-SA-2025-2621)

The remote host is missing an update for the Huawei EulerOS 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 ifdescription...

EulerOS Virtualization 2.13.1 : curl (EulerOS-SA-2025-2621)

According to the versions of the curl packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : 1. A cookie is set using the secure keyword for https://target 2. curl is redirected to or otherwise made to speak with http://target...

CLSA-2025-1767083454 curl: Fix of CVE-2025-0167

CVE-2025-0167: fix password leaking when the netrc file has a default entry that omits both login and password...

curl: HTTP/2 and HTTP/3 Header Injection in curl

================================================================================ VULNERABILITY REPORT: HTTP/2 and HTTP/3 Header Injection in curl ================================================================================ VULNERABILITY TYPE: Response Header Injection / HTTP Response Splittin...

Alibaba Cloud Linux 3 : 0199: curl (ALINUX3-SA-2025:0199)

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by a vulnerability as referenced in the ALINUX3-SA-2025:0199 advisory. Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities: CVE-2025-9086: 1. A cookie is set using the secure...

curl: Proxy-Authorization header is leaked to origin server after redirect from proxied to direct connection

Summary curl leaks the Proxy-Authorization header to the origin server after following an HTTP redirect that transitions from a proxied connection to a direct connection e.g. when using --noproxy or when proxy is bypassed after redirect. This causes proxy credentials which are hop-by-hop to be se...