httpd: httpd: HTTP/2 Remote Denial of Service via compression bomb and Slowloris-style attack

A flaw was found in HTTP/2, affecting various web servers. A remote attacker can exploit this vulnerability by combining an HPACK compression bomb with a zero-byte flow-control window. This technique allows a small amount of data to expand into large memory allocations on the server, which are th...

GO-2026-5676 HTTP/3 QPACK Trailer Expansion Memory Exhaustion in github.com/quic-go/quic-go

HTTP/3 QPACK Trailer Expansion Memory Exhaustion in github.com/quic-go/quic-go...

GO-2026-5808 Incus has an argument injection in backup compression algorithm leading to AFW and ACE in github.com/lxc/incus

Incus has an argument injection in backup compression algorithm leading to AFW and ACE in github.com/lxc/incus...

PYSEC-2026-1484 JWCrypto vulnerable to JWT bomb Attack in `deserialize` function

Affected version Vendor: https://github.com/latchset/jwcrypto Version: 1.5.5 Description An attacker can cause a DoS attack by passing in a malicious JWE Token with a high compression ratio. When the server processes this Token, it will consume a lot of memory and processing time. Poc python from...

Excessive Iteration in gRPC

gRPC contains a vulnerability that allows hpack table accounting errors could lead to unwanted disconnects between clients and servers in exceptional cases/Three vectors were found that allow the following DOS attacks:- Unbounded memory buffering in the HPACK parser- Unbounded CPU consumption in...

PYSEC-2026-1424 Excessive Iteration in gRPC

gRPC contains a vulnerability that allows hpack table accounting errors could lead to unwanted disconnects between clients and servers in exceptional cases/ Three vectors were found that allow the following DOS attacks: - Unbounded memory buffering in the HPACK parser - Unbounded CPU consumption ...

CVE-2026-58226

CVE-2026-58226 affects the hpax component of elixir-mint. The vulnerability is in Elixir.HPAX.Types:decode_remaining_integer/3 , which decodes HPACK integers without an upper bound, allowing an unauthenticated attacker to trigger excessive CPU and transient memory via a small HTTP/2 header block....

EEF-CVE-2026-58226 Unauthenticated denial-of-service via unbounded HPACK integer decoding in hpax

Summary Inefficient Algorithmic Complexity vulnerability in elixir-mint hpax allows unauthenticated denial-of-service via unbounded HPACK integer decoding. hpax decodes HPACK variable-length integers with no upper bound on the decoded value or the number of continuation octets...

[SECURITY] Fedora 43 Update: openvpn-2.6.21-1.fc43

OpenVPN is a robust and highly flexible tunneling application that uses all of the encryption, authentication, and certification features of the OpenSSL library to securely tunnel IP networks over a single UDP or TCP port. It can use the Marcus Franz Xaver Johannes Oberhumers LZO library for...

[SECURITY] Fedora 43 Update: 7zip-26.02-1.fc43

7-Zip is a file archiver with a high compression ratio. The main features of 7-Zip are: High compression ratio in 7z format with LZMA and LZMA2 compression Supported formats: Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM Unpacking only: AR, ARJ, CAB, CHM, CPIO, CramFS, DMG, EXT, FAT,...

[SECURITY] Fedora 44 Update: openvpn-2.7.5-1.fc44

OpenVPN is a robust and highly flexible tunneling application that uses all of the encryption, authentication, and certification features of the OpenSSL library to securely tunnel IP networks over a single UDP or TCP port. It can use the Marcus Franz Xaver Johannes Oberhumers LZO library for...

haproxy: HAProxy: Denial of Service via HPACK dynamic table insertions

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...

[SECURITY] Fedora 44 Update: 7zip-26.02-1.fc44

7-Zip is a file archiver with a high compression ratio. The main features of 7-Zip are: High compression ratio in 7z format with LZMA and LZMA2 compression Supported formats: Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM Unpacking only: AR, ARJ, CAB, CHM, CPIO, CramFS, DMG, EXT, FAT,...

CVE-2026-7311

The TinyPNG – JPEG, PNG & WebP image compression plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the deleteconvertedimagesize function in all versions up to, and including, 3.6.13. This makes it possible for authenticated attackers, with...

jose4j: jose4j: Denial of Service via malicious JSON Web Encryption (JWE) token compression

A flaw was found in jose4j. A remote attacker can exploit this by crafting a malicious JSON Web Encryption JWE token with an exceptionally high compression ratio. When this token is processed by the server, it results in significant memory allocation and processing time during decompression. This...

CVE-2026-54428

Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core 5.4.2 and earlier, 5.5-beta1 and earlier allows an remote attacker to cause a denial of service through memory exhaustion by sending oversized compressed header blocks before the HTTP/2...

CVE-2026-54428

The CVE concerns Apache HttpComponents Core HPACK decoder: on HTTP/2, the HPACK decoder may allocate resources without limits or throttling, allowing a remote attacker to cause memory exhaustion and denial of service. Affected versions are 5.4.2 and earlier, and 5.5-beta1 and earlier. The issue o...

EUVD-2026-41095

Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core 5.4.2 and earlier, 5.5-beta1 and earlier allows an remote attacker to cause a denial of service through memory exhaustion by sending oversized compressed header blocks before the HTTP/2...

RLSA-2026:30859 Important: perl-IO-Compress security update

This distribution provides a Perl interface to allow reading and writing of compressed data created with the zlib and bzip2 libraries. IO-Compress supports reading and writing of bzip2, RFC 1950, RFC 1951, RFC 1952 i.e. gzip and zip files/buffers. The following modules used to be distributed...

OPENSUSE-SU-2026:21175-1 Security update for python-zeroconf

This update for python-zeroconf fixes the following issues: Changes in python-zeroconf: - CVE-2026-47180: zeroconf has unbounded recursion in DNS compression-pointer decoder that allows LAN-local denial of service bsc1268341 - CVE-2026-47183: zeroconf: Unbounded exception-dedup state retains pack...