CVE-2026-67339

A flaw was found in guzzlehttp/guzzle, where it fails to properly isolate Proxy-Authorization headers from origin servers when using cURL handlers. A remote attacker could exploit this vulnerability when requests are redirected, bypassed, or sent through SOCKS proxies that Guzzle misclassifies as...

curl: 49: Cookie-jar save transfers group access to a different GID

Summary Curlfopen copies the old cookie jar's permission bits onto a newly created temp file, but the temp file may receive a different GID the process's primary group instead of the old file's group. After rename, group-permission bits that were intended for one group now authorize a different...

curl: CVE-2026-82208: wolfSSL CA-cache hit overrides callback

Summary With the wolfSSL backend, when CA caching is enabled and an CURLOPTSSLCTXFUNCTION callback replaces the trust store, curl can silently reinstall the cached store after the callback returns. A certificate trusted by the cached store but rejected by the callback-selected store is then...

TencentOS Server 3: curl (TSSA-2026:0910)

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:0910 advisory. Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:...

SUSE SLED15 / SLES15 Security Update : curl (SUSE-SU-2026:3798-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3798-1 advisory. - CVE-2026-5545: wrong reuse of HTTP Negotiate connection bsc1262632. - CVE-2026-5773: wrong reuse of SMB...

curl: CVE-2026-80255: secure cookie attribute bypass with tab

Summary A Set-Cookie header using HTAB horizontal tab instead of SPACE before the Secure attribute — e.g. Set-Cookie: sid=SECRET;\tSecure — causes curl to store the cookie without its Secure flag. The cookie is then sent over plaintext HTTP on subsequent requests to the same host. The...

curl: CVE-2026-82209: domain-scoped PSL domain cookie

Summary When libpsl is enabled and a response host is itself a public suffix e.g. github.io, a Set-Cookie header whose Domain attribute exactly equals that host is accepted by psliscookiedomainacceptable but stored with tailmatch = TRUE. RFC 6265 §5.3 requires this exact-match case to produce a...

curl: 46: `--libcurl` output carries `--insecure` across `--next` boundaries

Summary When --libcurl generates C source for a command that uses --next to separate multiple operations, local options from earlier operations leak into later ones. Specifically, if the first operation uses --insecure and the second does not, the generated program silently skips TLS certificate...

SUSE-SU-2026:23361-1 Security update for curl

This update for curl fixes the following issues: - CVE-2026-5773: wrong reuse of SMB connection bsc1262633. - CVE-2026-7168: cross-proxy Digest auth state leak bsc1263440. - CVE-2026-8926: password leak with netrc and user in URL bsc1268412. Changes for curl: - Call httpsize first to prioritize...

SUSE-SU-2026:23350-1 Security update for curl

This update for curl fixes the following issues: - CVE-2026-5773: wrong reuse of SMB connection bsc1262633. - CVE-2026-7168: cross-proxy Digest auth state leak bsc1263440. - CVE-2026-8926: password leak with netrc and user in URL bsc1268412. Changes for curl: - Call httpsize first to prioritize...

Exploit for CVE-2026-19914

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Security update for curl

This update for curl fixes the following issues: CVE-2026-7168: cross-proxy Digest auth state leak bsc1263440. CVE-2026-8286: wrong STARTTLS connection reuse bsc1268402. CVE-2026-8458: wrong reuse for different services bsc1268407. CVE-2026-8924: traling dot domain super cookie bsc1268409...

SUSE-SU-2026:3814-1 Security update for curl

This update for curl fixes the following issues: - CVE-2026-7168: cross-proxy Digest auth state leak bsc1263440. - CVE-2026-8286: wrong STARTTLS connection reuse bsc1268402. - CVE-2026-8458: wrong reuse for different services bsc1268407. - CVE-2026-8924: traling dot domain super cookie bsc1268409...

curl: CVE-2026-80231: native CA store conn reuse

Summary nativecastore is in struct sslconfigdata line 73 of vtlsconfig.h, not sslprimaryconfig. matchsslprimaryconfig does not compare it. On macOS, Curlssleasyconfigcomplete line 258 auto-sets nativecastore = TRUE when no custom CA is configured — without modifying ssloptions. When CURLCABUNDLE ...

curl: CVE-2026-80230: OpenSSL pinning bypass

Summary Curlosslcheckpeercert line 4795 calls SSLget1peercertificate. When no peer certificate is available — as with anonymous cipher suites like AECDH-AES128-SHA — the function returns NULL. The subsequent guard at lines 4798–4799 checks !connconfig-verifypeer || connconfig-verifyhost; when bot...

curl: CVE-2026-80229: OpenSSL provider use-after-free

Summary When CURLOPTSSLENGINE is set e.g. "default" on OpenSSL 3.x, osslsetprovider line 1791 allocates a per-handle OSSLLIBCTX and stores it in data-state.libctx. During TLS connection setup, SSLCTXnewex line 3750 receives this library context and embeds a pointer to it inside the newly created...

USN-8670-2 curl vulnerability

USN-8670-1 fixed a vulnerability in curl. This update provides the corresponding update for Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. Original advisory details: Joshua Rogers discovered that curl incorrectly handled reusing connections when client certificate settings changed. Thi...

curl: ARG_CLEAR credential scrubbing wipes only UTF-8 copies on Windows Unicode builds

cleanarg operates on char str, which is the UTF-8 copy allocated by converttchartoUTF8. It has no reference to the original wchart argv element. c / toolgetparam.c:632 / static void cleanargchar str / now that getstr has copied the contents of nextarg, wipe the next argument out so that the...

Security update for curl

This update for curl fixes the following issues: 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 redirect-to proxy bsc1262635. CVE-2026-6276: stale custom cookie host causes...

SUSE-SU-2026:3798-1 Security update for curl

This update for curl fixes the following issues: - 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 redirect-to proxy bsc1262635. - CVE-2026-6276: stale custom cookie host...