40 matches found
CVE-2026-94265
When processing an HTTP redirect to a URL containing userinfo a username:password component, curl might erroneously retain and re-transmit the original host's HTTP Negotiate authentication state. Consequently, a malicious server can trigger a redirect containing arbitrary userinfo to force curl t...
CVE-2026-94265 Authorization: Negotiate sent to foreign origin
When processing an HTTP redirect to a URL containing userinfo a username:password component, curl might erroneously retain and re-transmit the original host's HTTP Negotiate authentication state. Consequently, a malicious server can trigger a redirect containing arbitrary userinfo to force curl t...
CVE-2026-94265
The curl library (and libcurl package) is vulnerable to an information exposure flaw when processing HTTP redirects to URLs containing userinfo (a username:password component). The software may erroneously retain and re-transmit the original host's HTTP Negotiate authentication state to an untrus...
CVE-2026-94265
When processing an HTTP redirect to a URL containing userinfo a username:password component, curl might erroneously retain and re-transmit the original host's HTTP Negotiate authentication state. Consequently, a malicious server can trigger a redirect containing arbitrary userinfo to force curl t...
curl information leakage vulnerability
The curl 8.22.0 and 8.21.0 versions have a vulnerability involving information leakage. This vulnerability arises from incorrectly retaining and re-transmitting the HTTP Negotiate authentication state of the original host when handling HTTP redirections that contain userinfo. This allows maliciou...
Authorization: Negotiate sent to foreign origin
When processing an HTTP redirect to a URL containing userinfo a username:password component, curl might erroneously retain and re-transmit the original host's HTTP Negotiate authentication state. Consequently, a malicious server can trigger a redirect containing arbitrary userinfo to force curl t...
PT-2026-114425
Name of the Vulnerable Software and Affected Versions curl versions prior to 8.23.0-1.1 Description When processing an HTTP redirect to a URL containing userinfo a username:password component, curl may incorrectly retain and re-transmit the HTTP Negotiate authentication state from the original...
curl: libcurl: Authentication bypass due to incorrect HTTP Negotiate connection reuse
A flaw was found in libcurl. An application using libcurl that performs an authenticated HTTPS request after a Negotiate-authenticated one to the same host may incorrectly reuse the previous connection. This authentication bypass vulnerability allows the second request to be sent over a connectio...
curl: libcurl: Authentication bypass due to incorrect HTTP Negotiate connection reuse
A flaw was found in libcurl. An application using libcurl that performs an authenticated HTTPS request after a Negotiate-authenticated one to the same host may incorrectly reuse the previous connection. This authentication bypass vulnerability allows the second request to be sent over a connectio...
SUSE-SU-2026:2703-1 Security update for curl
This update for curl fixes the following issues - CVE-2026-4873: connection reuse ignores TLS requirement bsc1262631. - CVE-2026-5545: wrong reuse of HTTP Negotiate connection bsc1262632. - CVE-2026-5773: wrong reuse of SMB connection bsc1262633. - CVE-2026-6253: proxy credentials leak over...
SUSE-SU-2026:22156-1 Security update for curl
This update for curl fixes the following issues: - CVE-2026-4873: connection reuse ignores TLS requirement bsc1262631. - CVE-2026-5545: wrong reuse of HTTP Negotiate connection bsc1262632. - CVE-2026-6253: proxy credentials leak over redirect-to proxy bsc1262635. - CVE-2026-6276: stale custom...
OPENSUSE-SU-2026:20973-1 Security update for curl
This update for curl fixes the following issues: - CVE-2026-4873: connection reuse ignores TLS requirement bsc1262631. - CVE-2026-5545: wrong reuse of HTTP Negotiate connection bsc1262632. - CVE-2026-6253: proxy credentials leak over redirect-to proxy bsc1262635. - CVE-2026-6276: stale custom...
CLSA-2026-1778890582 curl: Fix of CVE-2026-5545
CVE-2026-5545: wrong reuse of HTTP Negotiate connection; only allow an existing connection to be reused and "upgraded" to NTLM when neither NTLM nor Negotiate authentication is in flight on it...
CVE-2026-5545
libcurl might in some circumstances reuse the wrong connection when asked to do an authenticated HTTPS request after a Negotiate-authenticated one, when both use the same host. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid...
SUSE SLED15 / SLES15 Security Update : curl (SUSE-SU-2026:1717-1)
The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1717-1 advisory. Security issues fixed: - CVE-2026-4873: connection reuse ignores TLS requirement bsc1262631. - CVE-2026-5545:...
Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : curl vulnerabilities (USN-8227-1)
The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8227-1 advisory. It was discovered that curl incorrectly reused non-TLS connections when TLS was required in some STARTTLS configurations....
USN-8227-1: curl vulnerabilities
It was discovered that curl incorrectly reused non-TLS connections when TLS was required in some STARTTLS configurations. A remote attacker could possibly use this issue to obtain sensitive information. CVE-2026-4873 It was discovered that curl incorrectly reused certain HTTP Negotiate connection...
USN-8227-1 curl vulnerabilities
It was discovered that curl incorrectly reused non-TLS connections when TLS was required in some STARTTLS configurations. A remote attacker could possibly use this issue to obtain sensitive information. CVE-2026-4873 It was discovered that curl incorrectly reused certain HTTP Negotiate connection...
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...
CLSA-2026-1774260216 Fix CVE(s): CVE-2026-1965, CVE-2026-3783, CVE-2026-3784
SECURITY UPDATE: reuse of connections using HTTP Negotiate - debian/patches/CVE-2026-1965.patch: fix reuse of connections using HTTP Negotiate and fix copy and paste urlmatchauthnego mistake. - CVE-2026-1965 Bearer token sent without checking auth is allowed - debian/patches/CVE-2026-3783.patch:...