CVE-2025-15079

When doing SSH-based transfers using either SCP or SFTP, and setting the knownhosts file, libcurl could still mistakenly accept connecting to hosts not present in the specified file if they were added as recognized in the libssh global knownhosts file...

UBUNTU-CVE-2025-14819

When doing TLS related transfers with reused easy or multi handles and altering the CURLSSLOPTNOPARTIALCHAIN option, libcurl could accidentally reuse a CA store cached in memory for which the partial chain option was reversed. Contrary to the user's wishes and expectations. This could make libcur...

curl: State Isolation Failure in Multiplexed Connections (Shared Auth Context)

Vulnerability: State Isolation Failure in Multiplexed Connections Shared Auth Context Product: libcurl Affected Versions: v7.43.0 - Current v8.x - All versions supporting HTTP/2 Multiplexing Severity: CRITICAL CVSS: 9.1 1. Executive Summary A fundamental design flaw exists in libcurl's state...

Important: ecs-service-connect-agent

Issue Overview: There exists a denial of service through Data corruption in gRPC-C++ - gRPC-C++ servers with transmit zero copy enabled through the channel arg GRPCARGTCPTXZEROCOPYENABLED can experience data corruption issues. The data sent by the application may be corrupted before transmission...

Amazon Linux 2 : ecs-service-connect-agent, --advisory ALAS2ECS-2025-093 (ALASECS-2025-093)

The version of ecs-service-connect-agent installed on the remote host is prior to v1.34.4.2-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2ECS-2025-093 advisory. There exists a denial of service through Data corruption in gRPC-C++ - gRPC-C++ servers with...

curl: PROTOCOL-LEVEL: Persistent UDP Amplification and Cache Poisoning via Alt-Svc Logic Flaw

Summary A structural logic flaw in the libcurl Alt-Svc header parser allows attack attributes specifically persist and max-age to "leak" from one service definition to another. We have successfully chained this logic bug with curl's HTTP/3 QUIC support to demonstrate a Persistent UDP Amplificatio...

curl: SMTP CRLF Injection & Protocol Desynchronization in libcurl

Executive Summary A critical security vulnerability has been identified in libcurl's SMTP protocol handler. The vulnerability allows for SMTP Command Smuggling and Protocol Desynchronization by injecting CRLF sequences into email address fields. This can be exploited to bypass security controls,...

curl: CVE-2025-15224: libssh key passphrase bypass without agent set

A vulnerability was discovered in the libcurl libssh backend where the CURLOPTSSHAUTHTYPES option did not properly implement the CURLSSHAUTHAGENT flag. As a result, if the CURLSSHAUTHPUBLICKEY option was set, the implementation would act as if CURLSSHAUTHAGENT was always defined, allowing...

curl: Cross‑Layer State Confusion in libcurl: Credential & Key‑Material Persistence Across Redirect / Connection Reuse Boundaries

Summary: This report describes a state‑level security invariant violation in libcurl where credential‑ or key‑related state may persist or be re‑applied across logical trust boundaries redirects, connection reuse, or scheme transitions without a formal invariant enforcing reset semantics. The iss...

curl: CRLF Injection / Protocol Smuggling in libcurl via CURLOPT_USERNAME (IMAP)

Summary: I have discovered a CRLF injection vulnerability in the IMAP protocol implementation of libcurl. The vulnerability exists because the imapatom function in lib/imap.c fails to properly sanitize or quote Carriage Return \r and Line Feed \n characters when processing the CURLOPTUSERNAME...

AlmaLinux 8 : curl (ALSA-2025:23383)

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2025:23383 advisory. curl: libcurl: Curl out of bounds read for cookie path CVE-2025-9086 Tenable has extracted the preceding description block directly from the AlmaLinux security...

curl security update

An update is available for curl. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The curl packages provide the libcurl library and the curl utility for downloadi...

RockyLinux 8 : curl (RLSA-2025:23383)

The remote RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2025:23383 advisory. curl: libcurl: Curl out of bounds read for cookie path CVE-2025-9086 Tenable has extracted the preceding description block directly from the RockyLinux security...

Moderate: curl security update

The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP, and LDAP. Security Fixes: curl: libcurl: Curl out of bounds read for cookie path CVE-2025-9086 For more details about the security issues, including...

curl: Denial of Service (DoS) vulnerability in dedotdotify() URL path normalization

Summary A Denial of Service DoS vulnerability exists in the dedotdotify function in lib/urlapi.c that can cause excessive CPU consumption due to On² time complexity when processing URLs with malicious path patterns containing many ../ sequences. Affected Component - Component: libcurl URL API -...

macOS 15.x < 15.7.3 Multiple Vulnerabilities (125887)

The remote host is running a version of macOS / Mac OS X that is 15.x prior to 15.7.3. It is, therefore, affected by multiple vulnerabilities: - A vulnerability has been identified in the libarchive library. This flaw can be triggered when file streams are piped into bsdtar, potentially allowing...

macOS 26.x < 26.2 Multiple Vulnerabilities (125886)

The remote host is running a version of macOS / Mac OS X that is 26.x prior to 26.2. It is, therefore, affected by multiple vulnerabilities: - A vulnerability has been identified in the libarchive library. This flaw can be triggered when file streams are piped into bsdtar, potentially allowing fo...

macOS 14.x < 14.8.3 Multiple Vulnerabilities (125888)

The remote host is running a version of macOS / Mac OS X that is 14.x prior to 14.8.3. It is, therefore, affected by multiple vulnerabilities: - A vulnerability has been identified in the libarchive library. This flaw can be triggered when file streams are piped into bsdtar, potentially allowing...

Moderate: Red Hat Security Advisory: curl security update

An update for curl is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is availab...

RHEL 9 : curl (RHSA-2025:23125)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:23125 advisory. The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP,...