CURL-CVE-2026-6253 proxy credentials leak over redirect-to proxy

curl might erroneously pass on credentials for a first proxy to a second proxy. This can happen when the following conditions are true: 1. curl is setup to use specific different proxies for different URL schemes 2. the first proxy needs credentials 3. the second proxy uses no credentials 4. whil...

MAL-2026-3159 Malicious code in apple-internal-pki-trust-v5 (npm)

Malicious npm package published by threat actor "raya4321" as part of a coordinated typosquatting campaign impersonating Apple internal infrastructure services authentication, PKI, telemetry, CloudKit, and cloud infrastructure. All packages in this campaign execute credential-theft payloads durin...

curl: MQTT state machine confusion: PINGRESP/DISCONNECT with non-zero remaining_length dispatches to stale nextstate

Summary: In lib/mqtt.c, the state machine in mqttdoing lines 894-911 in curl 8.20.0 does not validate that PINGRESP 0xD0 and DISCONNECT 0xE0 packets have remaininglength == 0 as required by MQTT 3.1.1 spec sections 3.13.1 and 3.14.1. A malicious broker can send a PINGRESP fixed header with non-ze...

Linux Distros Unpatched Vulnerability : CVE-2026-4873

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A vulnerability exists where a connection requiring TLS incorrectly reuses an existing unencrypted connection from the same connection pool. If an initial...

Linux Distros Unpatched Vulnerability : CVE-2026-5773

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - libcurl might in some circumstances reuse the wrong connection for SMBS transfers. libcurl features a pool of recent connections so that subsequent requests can...

Origin Validation Error

Overview Affected versions of this package are vulnerable to Origin Validation Error via the reuse of an easy handle in HTTP requests when a custom Host: header is set for the initial request and omitted in a subsequent one. An attacker can obtain cookies intended for a different host by exploiti...

PT-2026-35894

Name of the Vulnerable Software and Affected Versions curl affected versions not specified Description curl may erroneously pass credentials intended for a first proxy to a second proxy. This occurs when curl is configured to use different proxies for different URL schemes, the first proxy requir...

Linux Distros Unpatched Vulnerability : CVE-2026-6253

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - curl might erroneously pass on credentials for a first proxy to a second proxy. This can happen when the following conditions are true: 1. curl is setup to use...

Linux Distros Unpatched Vulnerability : CVE-2026-6429

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - When asked to both use a .netrc file for credentials and to follow HTTP redirects, libcurl could leak the password used for the first host to the followed-to ho...

Cleartext Transmission of Sensitive Information

Overview Affected versions of this package are vulnerable to Cleartext Transmission of Sensitive Information due to the incorrect reuse of an unencrypted connection for a subsequent request that expects TLS. An attacker can intercept sensitive information if the second connection is done to the...

PT-2026-35897

Name of the Vulnerable Software and Affected Versions curl affected versions not specified Description When using the Certificate Status Request TLS extension, commonly known as OCSP stapling, to verify server certificate validity, the software fails to detect OCSP problems and incorrectly treats...

Exposure of Data Element to Wrong Session

Overview Affected versions of this package are vulnerable to Exposure of Data Element to Wrong Session due to the SMB connection reuse. An attacker can cause unintended file downloads or uploads to incorrect locations by exploiting a logical error in the reuse of SMB connections. Remediation...

Linux Distros Unpatched Vulnerability : CVE-2026-5545

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - libcurl might in some circumstances reuse the wrong connection when asked to do an authenticated HTTPS request after a Negotiate-authenticated one, when both us...

Linux Distros Unpatched Vulnerability : CVE-2026-7168

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Successfully using libcurl to do a transfer over a specific HTTP proxy proxyA with Digest authentication and then changing the proxy host to a second one proxyB...

curl: CVE-2026-7168: cross-proxy Digest auth state leak

Summary: On libcurl 8.19.0, Proxy Digest state learned from proxyA survives an independent transfer boundary on a reused easy handle and is emitted preemptively to proxyB when the proxy is changed. In the attached C PoC, the first CONNECT to proxyB carries Proxy-Authorization: Digest ... built fr...

Fedora 44 : curl (2026-f13d888b0f)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-f13d888b0f advisory. - Fix bad reuse of HTTP Negotiate connection CVE-2026-1965 - Fix token leak with redirect and netrc CVE-2026-3783 - Fix wrong proxy connection reuse...

[SECURITY] Fedora 44 Update: curl-8.18.0-6.fc44

curl is a command line tool for transferring data with URL syntax, supporting FTP, FTPS, HTTP, HTTPS, SCP, SFTP, TFTP, TELNET, DICT, LDAP, LDAPS, FILE, IMA P, SMTP, POP3 and RTSP. curl supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP form based upload, proxies, cookies,...

Oracle MySQL Server 8.4.x < 8.4.9 (April 2026 CPU)

The versions of MySQL Server installed on the remote host are affected by multiple vulnerabilities as referenced in the April 2026 CPU advisory. - Vulnerability in the MySQL Server product of Oracle MySQL component: Server: Packaging OpenSSL. Supported versions that are affected are 8.0.0-8.0.45,...

Oracle MySQL Server 8.0.x < 8.0.46 (April 2026 CPU)

The versions of MySQL Server installed on the remote host are affected by multiple vulnerabilities as referenced in the April 2026 CPU advisory. - Vulnerability in the MySQL Server product of Oracle MySQL component: Server: Packaging OpenSSL. Supported versions that are affected are 8.0.0-8.0.45,...

Oracle MySQL Server 9.x.x < 9.7.0 (April 2026 CPU)

The versions of MySQL Server installed on the remote host are affected by multiple vulnerabilities as referenced in the April 2026 CPU advisory. - Vulnerability in the MySQL Server product of Oracle MySQL component: Server: Packaging OpenSSL. Supported versions that are affected are 8.0.0-8.0.45,...