CVE-2026-9079

A flaw was found in curl. When libcurl is instructed to clear proxy authentication credentials, it fails to do so, leaving the old credentials available. This could lead to the unintended reuse of sensitive proxy authentication credentials for subsequent network transfers, potentially resulting i...

CVE-2026-8932

A flaw was found in curl. The libcurl library, used for transferring data with URLs, could improperly reuse existing network connections. This occurred even when changes to mutual Transport Layer Security mTLS settings, particularly those for client certificates, should have prevented such reuse...

CVE-2026-9080

A flaw was found in libcurl. When curleasypause is called within the event-based CURLMOPTSOCKETFUNCTION callback, a use-after-free vulnerability is triggered. This occurs because libcurl attempts to store a flag using a pointer to memory that has already been freed. An attacker could potentially...

CVE-2026-9547

A flaw was found in curl. When a libcurl-based application uses SCP:// or SFTP:// for transfers and employs the CURLOPTSSHKEYFUNCTION callback, it may silently accept an untrusted server. This occurs if the server's host key type differs from the one stored in the knownhosts file. The callback...

MGASA-2026-0234 Updated yt-dlp packages fix security vulnerabilities

CVE-2026-50019 If curl is used as an external downloader for yt-dlp, cookies may be leaked to an unintended host upon HTTP redirect or when the host for download fragments differs from their parent manifest's. CVE-2026-50023 A vulnerability exists in yt-dlp that allows a remote attacker to write...

Use After Free

Overview Affected versions of this package are vulnerable to Use After Free in the curleasycleanup process after configuring an HTTP/2 stream-dependency tree using CURLOPTSTREAMDEPENDS or CURLOPTSTREAMDEPENDSE and invoking curleasyreset. An attacker can cause the application to access freed memor...

Authentication Bypass by Primary Weakness

Overview Affected versions of this package are vulnerable to Authentication Bypass by Primary Weakness in the connection pool process. An attacker can bypass intended certificate validation by reusing a handle that initially used the default native CA trust and then switching it to custom CA...

Infinite loop

Overview Affected versions of this package are vulnerable to Infinite loop in the udpreceive process. An attacker can cause the client to enter a busy-loop and become unresponsive by continuously sending zero-length UDP datagrams from a malicious HTTP/3 server. Remediation Upgrade libcurl to...

Use After Free

Overview Affected versions of this package are vulnerable to Use After Free in the CURLMOPTSOCKETFUNCTION callback when curleasypause is called. An attacker can execute arbitrary code or cause a denial of service by triggering the use of a dangling pointer after memory has been freed. Remediation...

Insertion of Sensitive Information Into Sent Data

Overview Affected versions of this package are vulnerable to Insertion of Sensitive Information Into Sent Data in the process of reusing a handle for sequential transfers with environment-variable proxy configuration. An attacker can cause sensitive authentication headers to be sent to an...

CVE-2026-8926

When asking curl to use a .netrc file to find credentials and at the same time specifying a URL with a username without a password, like https://[email protected]/, curl could wrongly get and use the password for another user set in the .netrc file for that host if such a one exists and there is n...

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...

AZL-91788 CVE-2026-8927 affecting package curl for versions less than 8.11.1-10

When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against proxyA using Digest auth, a subsequent transfer routed...

CVE-2026-8927

When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against proxyA using Digest auth, a subsequent transfer routed...

AZL-91791 CVE-2026-9079 affecting package curl for versions less than 8.11.1-10

libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them...

ALPINE-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...

AZL-91821 CVE-2026-8926 affecting package curl for versions less than 8.11.1-10

When asking curl to use a .netrc file to find credentials and at the same time specifying a URL with a username without a password, like https://[email protected]/, curl could wrongly get and use the password for another user set in the .netrc file for that host if such a one exists and there is n...

AZL-91797 CVE-2026-8932 affecting package curl for versions less than 8.11.1-10

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...

ALPINE-CVE-2026-8926

When asking curl to use a .netrc file to find credentials and at the same time specifying a URL with a username without a password, like https://[email protected]/, curl could wrongly get and use the password for another user set in the .netrc file for that host if such a one exists and there is n...

ALPINE-CVE-2026-12064

When a user invokes curl using a schemeless URL combined with --proto-default sftp or scp, a disconnect occurs between the tool layer and libcurl. The tool layer incorrectly infers the URL scheme, which erroneously bypasses the initialization of critical SSH security options like...