1462 matches found
PT-2026-63372
In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, client terminated DNS-over-QUIC DoQ queries are not accounted properly by Unbound resulting in low-cost inflation of the waiting number of replies for already in-flight resolution queries. This results in degradation of resolution service f...
PT-2026-63367
In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, in DNS-over-QUIC environments, with high concurrency and under pressure, an assertion in libngtcp2 about monotonic timestamps could trigger and result in server termination and thus denial of service. When interfacing with libngtcp2, for...
PT-2026-63370
In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, when downstream DNS-over-QUIC DoQ is enabled, the first two bidirectional streams on a new QUIC connection stream id 0 and 4 bypass the per-stream 'quic-size' gate entirely, and large input buffers are allocated later, after only the 2-byte...
PT-2026-63391
In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, a remote unauthenticated client can trigger a libngtcp2 assertion if compiled with assertions on and terminate the entire Unbound process using a single DNS-over-QUIC DoQ connection and one normal DNS query. This is caused by an erroneous...
CVE-2026-56816 Netty: Memory Exhaustion via HTTP/3 Reserved Frame Types
Netty is a network application framework for development of protocol servers and clients. Prior to 4.2.16.Final, Netty's Http3FrameCodec buffers incoming data for HTTP/3 reserved frame types up to the wire-specified payload length without limits; decodeFrame trusts payLoadLength, allowing an...
CVE-2026-56816
Netty HTTP/3 vulnerability (CVE-2026-56816): The Http3FrameCodec buffers incoming reserved HTTP/3 frame types up to the wire payload length and trusts payLoadLength, enabling an attacker to open many QUIC streams and send frames with oversized payloads, causing memory exhaustion and denial of ser...
CVE-2026-16318
The QUIC transport parameters extension handler in s2n-tls incorrectly uses s2nalloc instead of s2nrealloc to store the peer's transport parameters. When a TLS 1.3 connection goes through a HelloRetryRequest, the handler is called twice on the same connection. On the second call, s2nalloc zeroes...
CVE-2026-16318 QUIC Transport Parameters Memory Leak During HelloRetryRequest in s2n-tls
The QUIC transport parameters extension handler in s2n-tls incorrectly uses s2nalloc instead of s2nrealloc to store the peer's transport parameters. When a TLS 1.3 connection goes through a HelloRetryRequest, the handler is called twice on the same connection. On the second call, s2nalloc zeroes...
CVE-2026-16318
The CVE-2026-16318 issue affects server-side QUIC deployments using s2n-tls, where the QUIC transport parameters extension handler uses s2n_alloc instead of s2n_realloc. During TLS 1.3 HelloRetryRequest, the handler runs twice on the same connection; on the second run it zeroes the existing point...
EUVD-2026-46402
The QUIC transport parameters extension handler in s2n-tls incorrectly uses s2nalloc instead of s2nrealloc to store the peer's transport parameters. When a TLS 1.3 connection goes through a HelloRetryRequest, the handler is called twice on the same connection. On the second call, s2nalloc zeroes...
PT-2026-62072
The QUIC transport parameters extension handler in s2n-tls incorrectly uses s2n alloc instead of s2n realloc to store the peer's transport parameters. When a TLS 1.3 connection goes through a HelloRetryRequest, the handler is called twice on the same connection. On the second call, s2n alloc zero...
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-2026-26081
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-2026-44435
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 (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-2026-44436 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-2026-44434 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...