Curl 8.15.0 < 8.21.0 SASL Double-Free

The version of curl installed on the remote host is 8.15.0 prior to 8.21.0. It is, therefore, affected by a double-free vulnerability: - The curl logic that works with SASL authentication could end up cleaning up the GSASL context twice without clearing the pointer in between, making it free the...

Curl 7.46.0 < 8.21.0 Trailing Dot Domain Super Cookie

The version of curl installed on the remote host is 7.46.0 prior to 8.21.0. It is, therefore, affected by a cookie injection vulnerability: - A flaw in curl's cookie parsing logic allows a malicious HTTP server to set super cookies that bypass the Public Suffix List check. CVE-2026-8924 Note that...

Curl 7.30.0 < 8.21.0 Wrong STARTTLS Connection Reuse

The version of curl installed on the remote host is 7.30.0 prior to 8.21.0. It is, therefore, affected by an improper certificate validation vulnerability: - A vulnerability exists where a new transfer that uses STARTTLS to upgrade the connection might reuse an existing live connection even thoug...

Curl 7.81.0 < 8.21.0 Proto-Default Skips SSH Verification

The version of curl installed on the remote host is 7.81.0 prior to 8.21.0. It is, therefore, affected by an improper host validation vulnerability: - When a user invokes curl using a schemeless URL combined with --proto-default sftp, a disconnect occurs that erroneously bypasses the initializati...

Curl 8.18.0 < 8.21.0 QUIC Zero-Length UDP Datagrams DoS

The version of curl installed on the remote host is 8.18.0 prior to 8.21.0. It is, therefore, affected by a denial of service vulnerability: - An issue in curl's QUIC UDP receive function allows a malicious HTTP/3 server to trigger a remote denial of service by continuously streaming empty...

libcurl 8.13.0 < 8.21.0 Use-After-Free in Socket Callback

The version of libcurl installed on the remote host is 8.13.0 prior to 8.21.0. It is, therefore, affected by a use-after-free vulnerability: - Calling curleasypause within the event-based CURLMOPTSOCKETFUNCTION callback triggers a use-after-free vulnerability. CVE-2026-9080 Note that Nessus has n...

Curl 8.11.0 < 8.21.0 HTTP/3 Early Data Information Disclosure

The version of curl installed on the remote host is 8.11.0 prior to 8.21.0. It is, therefore, affected by an information disclosure vulnerability: - When libcurl returns to a hostname with a cached SSL session and early data enabled, libcurl might send the request bytes before enforcing the...

Curl 8.11.1 < 8.21.0 Netrc Password Leak

The version of curl installed on the remote host is 8.11.1 prior to 8.21.0. It is, therefore, affected by a credential disclosure vulnerability: - When asking curl to use a .netrc file to find credentials and at the same time specifying a URL with a username, curl could wrongly get and use the...

MAL-2026-6463 Malicious code in abu-common-components (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 17e7b4ac8a492915d8475c73488b64236250746de410c705b7cc43c0656589be package.json declares preinstall and postinstall hooks that invoke curl against a hardcoded bare-IP HTTP endpoint...

ThreatsDay Bulletin: Smart TV Proxyware, 24-Year curl Bug, AI Crime Forums + 13 More Stories

It’s dumb out there again. This week has the usual smell of prod on fire and nobody wanting to admit who left the door open — old creds still working, trusted apps doing sketchy crap, browser tricks jumping the fence, and “normal” workflows turning into phishing pipes because apparently email was...

Security Bulletin: Due to use of HCL BigFix , IBM Cloud Pak System is affected by multiple vulnerabilities

Summary Vulnerabilities found in HCL BigFix that affect IBM Endpoint Manager IEM pattern Type pType shipped with IBM Cloud Pak System. Vulnerabilities were addressed in IBM Cloud Pak System version 2.3.5.1. Vulnerability Details CVEID:CVE-2022-27775 DESCRIPTION: An information disclosure...

The vulnerability of the dependency management mechanism for HTTP/2 protocols in the libcurl library of the software tool for interacting with servers via cURL allows a attacker to cause a service failure.

The vulnerability of the dependency management mechanism for HTTP/2, as well as the libcurl library used in the cURL client software for interacting with servers, relates to the possibility of exploiting memory after it is freed. Exploiting this vulnerability could allow a remote attacker to caus...

The vulnerability of the libcurl library in software applications for interacting with servers via cURL is related to errors in the certificate validation process. This allows attackers to replace data or gain unauthorized access to protected information.

The vulnerability of the libcurl library in software applications for interacting with servers via cURL is related to errors in the certificate validation process. Exploiting this vulnerability could allow an attacker to remotely replace data or gain unauthorized access to protected information...

Astra Linux – Vulnerability in curl

When performing multi-threaded LDAPS transfers LDAP over TLS with libcurl, changing TLS options in one thread will inadvertently change them globally, and thus may also affect other concurrently running transfers. Disabling certificate verification for a specific transfer can unintentionally...

UBUNTU-CVE-2026-11352

An issue in curl’s QUIC UDP receive function allows a malicious HTTP/3 server to trigger a remote denial of service against a curl or libcurl client. Because the helper function discards zero-length UDP datagrams before counting them toward the per-call packet budget, a connected QUIC peer can...

CVE-2026-11856

Successfully using libcurl to do a transfer to a specific HTTP origin hostA with Digest authentication and then changing the origin to a different one hostB for a second transfer, reusing the same handle, makes libcurl wrongly pass on the Authorization: header field meant for hostA, to hostB...

UBUNTU-CVE-2026-8458

libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different 'services'. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When...

UBUNTU-CVE-2026-9080

Calling curleasypause within the event-based CURLMOPTSOCKETFUNCTION callback triggers a use-after-free vulnerability, where libcurl attempts to store a flag using a dangling struct pointer immediately after that pointer's memory has been freed...

UBUNTU-CVE-2026-8924

A flaw in curl’s cookie parsing logic allows a malicious HTTP server to set 'super cookies' that bypass the Public Suffix List check. This enables an attacker-controlled origin to inject cookies that curl subsequently scopes and transmits to unrelated third-party domains...

CVE-2026-8932

libcurl would reuse a previously created connection even when some mTLS config related option had been changed that should have prohibited reuse. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. However, some TLS...