curl: CVE-2026-8927: env-set cross-proxy Digest auth state leak

AI-assisted preparation note I used AI assistance to help structure and format this report, but the technical findings, PoC, and verification results are based on local testing against curl/libcurl 8.20.0. Summary I found a possible incomplete-fix variant of CVE-2026-7168 in libcurl 8.20.0. The...

CLSA-2026-1778934210 Fix of 7 CVEs

SECURITY UPDATE: off-by-one OOB read in modproxyajp message getters - debian/patches/CVE-2026-33857.patch: tighten length checks msg-len - = msg-len in ajpmsggetuint8/16/32 and ajpmsgpeekuint8/16 in modules/proxy/ajpmsg.c. - CVE-2026-33857 SECURITY UPDATE: heap over-read in modproxyajp via missin...

OESA-2026-2296 tomcat security update

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process. Security Fixes: Allocation of Resources Without...

MGASA-2026-0139 Updated tomcat packages fix security vulnerability

Unbounded read in WebDAV LOCK and PROPFIND handling. CVE-2026-41284 HTTP/2 request headers not validated. CVE-2026-41293 WebSocket authentication header exposure. CVE-2026-42498 Digest authenticator will authenticate any unknown user. CVE-2026-43512 LockOutRealm treats user names as case-sensitiv...

Updated tomcat packages fix security vulnerability

Unbounded read in WebDAV LOCK and PROPFIND handling. CVE-2026-41284 HTTP/2 request headers not validated. CVE-2026-41293 WebSocket authentication header exposure. CVE-2026-42498 Digest authenticator will authenticate any unknown user. CVE-2026-43512 LockOutRealm treats user names as case-sensitiv...

BIT-TOMCAT-2026-43512 Apache Tomcat: Digest authenticator will authenticate any unknown user

DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0 through 11.0.21, from 10.1.0 through 10.1.54, from 9.0.0 through 9.0.117, from 8.5.0 through 8.5.100, from before 7.0.0. Older unsupported versions any...

cross-proxy Digest auth state leak

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EUVD-2026-29932

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 for a second transfer, reusing the same handle, makes libcurl wrongly pass on the Proxy-Authorization: header field meant for proxyA, to...

httpd: mod_auth_digest: timing attack allows a bypass of digest authentication

A flaw was found in the modauthdigest module of httpd. A remote unauthenticated attacker can bypass digest authentication by measuring timing discrepancies of requests. This issue leads to unauthorized access to resources protected by digest authentication...

ALPINE-CVE-2026-7168

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 for a second transfer, reusing the same handle, makes libcurl wrongly pass on the Proxy-Authorization: header field meant for proxyA, to...

CVE-2026-7168

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 for a second transfer, reusing the same handle, makes libcurl wrongly pass on the Proxy-Authorization: header field meant for proxyA, to...

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

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 for a second transfer, reusing the same handle, makes libcurl wrongly pass on the Proxy-Authorization: header field meant for proxyA, to...

CVE-2026-7168

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 for a second transfer, reusing the same handle, makes libcurl wrongly pass on the Proxy-Authorization: header field meant for proxyA, to...

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

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 for a second transfer, reusing the same handle, makes libcurl wrongly pass on the Proxy-Authorization: header field meant for proxyA, to...

CVE-2026-7168

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 for a second transfer, reusing the same handle, makes libcurl wrongly pass on the Proxy-Authorization: header field meant for proxyA, to...

CVE-2026-7168

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 for a second transfer, reusing the same handle, makes libcurl wrongly pass on the Proxy-Authorization: header field meant for proxyA, to...

CVE-2026-7168

CVE-2026-7168 affects libcurl/curl where Digest authentication state is carried across proxies on the same easy handle. Public details show that changing proxies or only the proxy port can cause a stale Proxy-Authorization: Digest header (from proxyA) to be reused for proxyB, leaking authenticati...

SUSE CVE-2026-43512

DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from before 7.0.0. Older unsupported...

Linux Distros Unpatched Vulnerability : CVE-2026-43512

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through...

CVE-2026-42855

arduino-esp32 is an Arduino core for the ESP32, ESP32-S2, ESP32-S3, ESP32-C3, ESP32-C6 and ESP32-H2 microcontrollers. Prior to 3.3.8, the WebServer Digest authentication implementation in arduino-esp32 computes the authentication hash using the URI field from the client's Authorization header,...