CVE-2026-26081

HAProxy Community Edition 3.0 through 3.3 before 3.3.3 lacks a length check for the NEWTOKEN format. HAProxy Enterprise and ALOHA are also affected...

CVE-2026-26080

HAProxy Community Edition 3.2.x through 3.3.x before 3.3.3 can enter a loop or crash because varint is mishandled. HAProxy Enterprise and ALOHA are also affected...

CVE-2026-44435

Quicly is an IETF QUIC protocol implementation intended primarily for use within the H2O HTTP server. Prior to commit 937d0e9, an assertion failure is raised when the total number of valid handshake messages received over a CRYPTO stream of a single packet number space exceeds 32KB, causing a...

CVE-2026-44436 Quicly is vulnerable to connection state corruption

Quicly is an IETF QUIC protocol implementation intended primarily for use within the H2O HTTP server. Prior to commit 8b178e6, Quicly is vulnerable to a Denial of Service attack through connection state corruption. In QUIC Invariants, the maximum length of a Connection ID is 255 bytes, while QUIC...

CVE-2026-44436

Quicly (QUIC implementation used with H2O) is vulnerable to a Denial of Service due to connection state corruption caused by a 255-byte Connection ID handling in the decoder, while QUIC version 1 requires a 20-byte CID buffer. The library lacked enforcement for 20-byte CIDs, allowing mismatched I...

CVE-2026-44434 Quicly is vulnerable to stateless reset injection

Quicly is an IETF QUIC protocol implementation intended primarily for use within the H2O HTTP server. Prior to commit dccf5d4, Quicly was vulnerable to stateless reset injection through lack of packet entry validation. The QUIC protocol is designed to withstand packet injection attacks, once the...

PT-2026-60602

Name of the Vulnerable Software and Affected Versions Quicly versions prior to commit 8b178e6 Description Quicly is vulnerable to a Denial of Service DoS attack caused by connection state corruption. While the QUIC version 1 protocol restricts Connection IDs CID to 20 bytes, the packet decoder in...

github.com/quic-go/quic-go: quic-go: Denial of Service via excessive memory allocation in HTTP/3 trailers

A flaw was found in quic-go, an implementation of the QUIC protocol in Go. A remote attacker can exploit this by sending specially crafted HTTP/3 trailer fields. This can cause the system to allocate excessive memory, leading to a denial-of-service DoS condition where the affected server or clien...

MGASA-2026-0253 Updated openssl packages fix security vulnerabilities

The updated packages fix security vulnerabilities: Possible Heap Buffer Overflow in ASN.1 Multibyte String Conversion. CVE-2026-7383 Out-of-Bounds Read in CMS Password-Based Decryption. CVE-2026-9076 Heap Buffer Over-read in ASN.1 Content Parsing. CVE-2026-34180 PKCS12 Files with PBMAC1 Are...

CVE-2026-47703

AdGuard Home is a network-wide software for blocking ads and tracking. Prior to 0.107.75, AdGuard Home's client-triggered DoQ forwarding path to a udp:// upstream reduced backend UDP DNS state by producing dnsid=0 or txid=0 and exposed a quoted-port ICMP source-port oracle, weakening DNS response...

CVE-2026-47703

Summary: CVE-2026-47703 affects AdGuard Home and its DoQ-to-UDP forwarding path. Prior to version 0.107.75, the backend UDP path could collapse the DNS transaction ID (txid) to 0 on client-triggered DoQ queries, reducing the entropy of the backend tuple from (txid, source-port) to only the source...

CVE-2026-47703 AdGuard Home: DoQ-to-UDP State Reduction and Source-Port Oracle

AdGuard Home is a network-wide software for blocking ads and tracking. Prior to 0.107.75, AdGuard Home's client-triggered DoQ forwarding path to a udp:// upstream reduced backend UDP DNS state by producing dnsid=0 or txid=0 and exposed a quoted-port ICMP source-port oracle, weakening DNS response...

CVE-2026-40898

A flaw was found in quic-go, an implementation of the QUIC protocol in Go. A remote attacker can exploit this by sending specially crafted HTTP/3 trailer fields. This can cause the system to allocate excessive memory, leading to a denial-of-service DoS condition where the affected server or clien...

CVE-2026-11352

A flaw was found in curl and libcurl. A malicious HTTP/3 server can exploit an issue in the QUIC UDP receive function by continuously streaming empty UDP datagrams. This can lead to a remote denial of service DoS against a curl or libcurl client, as the helper function discards zero-length UDP...

CVE-2026-11352

The CVE-2026-11352 issue affects curl/libcurl: a bug in the QUIC UDP receive path discards zero-length UDP datagrams instead of counting them toward the per-call budget, enabling a connected HTTP/3 peer to continuously send empty datagrams and cause a remote denial-of-service against curl or libc...

CVE-2026-11352 QUIC zero-length UDP datagrams busy-loop

An issue in curl’s QUIC UDP receive function allows a malicious HTTP/3 server to trigger a remote denial of service against a curl or libcurl client. Because the helper function discards zero-length UDP datagrams before counting them toward the per-call packet budget, a connected QUIC peer can...

CVE-2026-11352

An issue in curl’s QUIC UDP receive function allows a malicious HTTP/3 server to trigger a remote denial of service against a curl or libcurl client. Because the helper function discards zero-length UDP datagrams before counting them toward the per-call packet budget, a connected QUIC peer can...

PT-2026-54772

Name of the Vulnerable Software and Affected Versions erlang/quic versions prior to 1.4.4 Description The QUIC client fails to authenticate the server during the TLS 1.3 handshake. Specifically, the verify process is ineffective because the CertificateVerify signature is not checked, the...

Linux Distros Unpatched Vulnerability : CVE-2026-13799

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Use after free in QUIC in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to potentially exploit heap corruption via malicious network traffic...

CVE-2026-13799

Use after free in QUIC in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to potentially exploit heap corruption via malicious network traffic. Chromium security severity: High...