AlmaLinux 9.2 [TuxCare] Security Update: qt5-qtbase / qt5-qtbase-common / qt5-qtbase-devel / etc (ALMALINUX9.2:CLSA-2025:1762191563)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2025:1762191563 advisory. - An issue was discovered in the HTTP2 implementation in Qt before 5.15.17, 6.x before 6.2.11, 6.3.x through 6.5.x before 6.5.4, and 6.6.x...

CentOS Linux 8.5 [TuxCare] Security Update: haproxy (CENTOS8.5:CLSA-2026:1782825734)

The CentOS Linux 8.5 host has a package installed that is affected by a vulnerability as referenced in the TuxCare CENTOS8.5:CLSA-2026:1782825734 advisory. - HAProxy through 3.4.0, fixed in commit 9a6d1fe, contains a null pointer dereference vulnerability in hpackdhtinsert within src/hpack-tbl.c...

AlmaLinux 9.2 [TuxCare] Security Update: containernetworking-plugins Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2025:1762538558)

The AlmaLinux 9.2 host has a package installed that is affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2025:1762538558 advisory. - A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder, sufficient to cause a denial of...

[SECURITY] [DSA 6529-1] libwebsockets security update

------------------------------------------------------------------------- Debian Security Advisory DSA-6529-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff September 29, 2026 https://www.debian.org/security/faq -...

BIT-ENVOY-2026-73550 Envoy: HTTP/2 Discarded Host Header 200 GB Header-Copy OOM in Envoy

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy copies every decoded HTTP/2 Host header value before discarding it when :authority is already present. The discarded value bypasses saveHeader, so its bytes a...

CLEANSTART-2026-UP28744 malformed `HTTP/2 HEADERS` frame with oversized, invalid `HPACK` data can cause Node

Security vulnerability affects the apache-superset package. A malformed HTTP/2 HEADERS frame with oversized, invalid HPACK data can cause Node...

CLEANSTART-2026-MM56894 Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core (5

Security vulnerability affects the sonarqube package. Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core 5...

CLEANSTART-2026-WU74095 hpack is an HTTP/2 Header Encoding for Python

Security vulnerability affects the airflow-3 package. hpack is an HTTP/2 Header Encoding for Python...

PT-2026-102728

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy copies every decoded HTTP/2 Host header value before discarding it when :authority is already present. The discarded value bypasses saveHeader, so its bytes a...

Debian dsa-6529 : libwebsockets-dev - security update

The remote Debian 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6529 advisory. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6529-1 [email protected] https://www.debian.org/security/ Moritz...

SUSE CVE-2026-59980

hpack is an HTTP/2 Header Encoding for Python. Prior to version 4.2.0, unbounded variable integer decoding can cause run-away computation on malformed input leading to On^2 runtime, effectively blocking further processing with large enough unsanitized input. A fix is available in python-hyper/hpa...

CVE-2026-91043 HPACK-indexed cookie fields in Mint HTTP/2 responses bypass max_header_list_size and exhaust client memory

Allocation of Resources Without Limits or Throttling vulnerability in elixir-mint mint allows a malicious HTTP/2 server to exhaust memory on the client host and cause a denial of service. Mint.HTTP2 enforces the client's maxheaderlistsize setting only on the compressed size of an inbound header...

EUVD-2026-88218

Allocation of Resources Without Limits or Throttling vulnerability in elixir-mint mint allows a malicious HTTP/2 server to exhaust memory on the client host and cause a denial of service. Mint.HTTP2 enforces the client's maxheaderlistsize setting only on the compressed size of an inbound header...

CVE-2026-91043

The elixir-mint mint HTTP client (versions 1.1.0 before 1.11.0 ) is vulnerable to a denial of service via memory exhaustion. The root cause is that Mint.HTTP2 only enforces the max_header_list_size on the compressed size of inbound header blocks, rather than the decoded list size as required by R...

CVE-2026-91043 HPACK-indexed cookie fields in Mint HTTP/2 responses bypass max_header_list_size and exhaust client memory

Allocation of Resources Without Limits or Throttling vulnerability in elixir-mint mint allows a malicious HTTP/2 server to exhaust memory on the client host and cause a denial of service. Mint.HTTP2 enforces the client's maxheaderlistsize setting only on the compressed size of an inbound header...

CVE-2026-91043 HPACK-indexed cookie fields in Mint HTTP/2 responses bypass max_header_list_size and exhaust client memory

Allocation of Resources Without Limits or Throttling vulnerability in elixir-mint mint allows a malicious HTTP/2 server to exhaust memory on the client host and cause a denial of service. Mint.HTTP2 enforces the client's maxheaderlistsize setting only on the compressed size of an inbound header...

EEF-CVE-2026-91043 HPACK-indexed cookie fields in Mint HTTP/2 responses bypass max_header_list_size and exhaust client memory

Summary Allocation of Resources Without Limits or Throttling vulnerability in elixir-mint mint allows a malicious HTTP/2 server to exhaust memory on the client host and cause a denial of service. Mint.HTTP2 enforces the client's maxheaderlistsize setting only on the compressed size of an inbound...

OESA-2026-4076 libwebsockets security update

Libwebsockets LWS is a flexible, lightweight pure C library for implementing modern network protocols easily with a tiny footprint, using a nonblocking event loop. Security Fixes: libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This...

Linux Distros Unpatched Vulnerability : CVE-2026-59980

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - hpack is an HTTP/2 Header Encoding for Python. Prior to version 4.2.0, unbounded variable integer decoding can cause run-away computation on malformed input...

hpack: Unbounded variable integer decoding can cause run-away computation on malformed input

Impact Users of the python-hyper/hpack library, most commonly used as downstream dependency of the python-hyper/h2 library an HTTP/2 client and server implementation. Unbounded variable integer decoding can cause run-away computation on malformed input leading to On^2 runtime, effectively blockin...