CVE-2026-54340

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 9265bdd, there is an HTTP/2 state amplification issue that combines HPACK decompression amplification with Slowloris-style stream stalling. Amplified decoded header state can be retained by stalled HTTP/2 streams,...

DEBIAN-CVE-2026-54340

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 9265bdd, there is an HTTP/2 state amplification issue that combines HPACK decompression amplification with Slowloris-style stream stalling. Amplified decoded header state can be retained by stalled HTTP/2 streams,...

UBUNTU-CVE-2026-54340

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 9265bdd, there is an HTTP/2 state amplification issue that combines HPACK decompression amplification with Slowloris-style stream stalling. Amplified decoded header state can be retained by stalled HTTP/2 streams,...

mod_http2 security update

2.0.29-4.2 - Resolves: RHEL-188008 - address CVE-2026-43951, CVE-2026-48913 2.0.29-4.1 - Resolves: RHEL-182410 - modhttp2: HTTP/2: Remote Denial of Service via compression bomb and Slowloris-style attack CVE-2026-49975 2.0.29-4 - Resolves: RHEL-166269 - httpd: Apache HTTP Server: HTTP/2 DoS by...

CVE-2026-54340

CVE-2026-54340 affects the h2o HTTP server (HTTP/2) and describes an HTTP/2 state amplification issue where HPACK decompression amplification combines with Slowloris-style stream stalling. Amplified decoded header state can be retained by stalled HTTP/2 streams; depending on configuration, additi...

CVE-2026-54340

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 9265bdd, there is an HTTP/2 state amplification issue that combines HPACK decompression amplification with Slowloris-style stream stalling. Amplified decoded header state can be retained by stalled HTTP/2 streams,...

EUVD-2026-45075

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 9265bdd, there is an HTTP/2 state amplification issue that combines HPACK decompression amplification with Slowloris-style stream stalling. Amplified decoded header state can be retained by stalled HTTP/2 streams,...

EUVD-2026-45016

Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.4, Centrifugo unidirectional WebSocket transport with uniwebsocket.compression enabled enforced uniwebsocket.messagesizelimit against compressed wire-frame length in internal/websocket/conn.go advanceFrame, but...

CVE-2026-62963

Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.4, Centrifugo unidirectional WebSocket transport with uniwebsocket.compression enabled enforced uniwebsocket.messagesizelimit against compressed wire-frame length in internal/websocket/conn.go advanceFrame, but...

CVE-2026-62963 Centrifugo: Decompression bomb DoS via permessage-deflate in unidirectional WebSocket transport

Centrifugo is an open-source scalable real-time messaging server. Prior to 6.8.4, Centrifugo unidirectional WebSocket transport with uniwebsocket.compression enabled enforced uniwebsocket.messagesizelimit against compressed wire-frame length in internal/websocket/conn.go advanceFrame, but...

CVE-2026-55204

A flaw was found in HAProxy. An attacker can trigger HPACK dynamic table insertions under memory pressure, leading to a null pointer dereference in the hpackdhtinsert function. This can cause HAProxy worker processes to crash, resulting in a denial of service DoS. Mitigation Mitigation for this...

c-ares: c-ares: CPU exhaustion denial of service via unbounded DNS name compression pointer chains

A flaw was found in c-ares, an asynchronous resolver library. The 'aresdnsnameparse' function does not properly limit the total pointer hops or assembled name length when enforcing backward DNS compression pointers. A remote attacker, operating a malicious DNS server, can send a specially crafted...

PT-2026-60605

Name of the Vulnerable Software and Affected Versions h2o versions prior to commit 9265bdd Description An HTTP/2 state amplification issue exists that combines HPACK decompression amplification with Slowloris-style stream stalling. This allows amplified decoded header state to be retained by...

delve security update

1.26.1-2.0.1 - Disable DWARF compression which has issues Alex Burmashev 1.26.1-2 - Bump...

NPM: websocket-driver: Resource limit bypass via message compression

NPM: websocket-driver: Resource limit bypass via message compression vulnerability discovered by ? in WordPress Npm websocket-driver versions 0.7.5...

SUSE CVE-2026-15747

Mojolicious versions from 4.59 before 9.48 for Perl expose a stable representation of the session CSRF token to a BREACH compression oracle. csrftoken generates and caches one token per session and returns the same value on every call, and csrffield places that value in a hidden csrftoken input...

CVE-2026-15747

A flaw was found in Mojolicious. This vulnerability exposes a stable representation of the session Cross-Site Request Forgery CSRF token to a BREACH compression oracle. When a web server response containing the token is gzip-compressed and also echoes attacker-controlled input, an attacker can us...

Security update for ImageMagick

This update for ImageMagick fixes the following issues CVE-2026-42050: stack buffer overflow in XTileImage bsc1265048. CVE-2026-42326: information disclosure via malicious IPTC input file bsc1268092. CVE-2026-45031: denial of Service due to resource policy bypass in PSD decoder bsc1268094...

SUSE-SU-2026:3024-1 Security update for ImageMagick

This update for ImageMagick fixes the following issues - CVE-2026-42050: stack buffer overflow in XTileImage bsc1265048. - CVE-2026-42326: information disclosure via malicious IPTC input file bsc1268092. - CVE-2026-45031: denial of Service due to resource policy bypass in PSD decoder bsc1268094. ...

SUSE-SU-2026:3023-1 Security update for ImageMagick

This update for ImageMagick fixes the following issues - CVE-2026-42050: stack buffer overflow in XTileImage bsc1265048. - CVE-2026-42326: information disclosure via malicious IPTC input file bsc1268092. - CVE-2026-45031: denial of Service due to resource policy bypass in PSD decoder bsc1268094. ...