JLSEC-2026-20

Hyperium Hyper before 0.14.19 does not allow for customization of the maxheaderlistsize method in the H2 third-party software, allowing attackers to perform HTTP2 attacks...

CVE-2026-22036

Undici is an HTTP/1.1 client for Node.js. Prior to 7.18.0 and 6.23.0, the number of links in the decompression chain is unbounded and the default maxHeaderSize allows a malicious server to insert thousands compression steps leading to high CPU usage and excessive memory allocation. This...

CVE-2026-22036

Undici is an HTTP/1.1 client for Node.js. Prior to 7.18.0 and 6.23.0, the number of links in the decompression chain is unbounded and the default maxHeaderSize allows a malicious server to insert thousands compression steps leading to high CPU usage and excessive memory allocation. This...

CVE-2022-31394

Hyperium Hyper before 0.14.19 does not allow for customization of the maxheaderlistsize method in the H2 third-party software, allowing attackers to perform HTTP2 attacks...

PT-2026-2950

Name of the Vulnerable Software and Affected Versions Undici versions prior to 7.18.0 Undici versions prior to 6.23.0 Description Undici is an HTTP/1.1 client for Node.js. A malicious server can insert thousands of compression steps due to an unbounded number of links in the decompression chain a...

Inefficient Algorithmic Complexity

Overview tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity in the HTTPHeaders.add method. An attacker can cause the server's event loop to become...

PYSEC-2025-266

Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, a single maliciously crafted HTTP request can block the server's event loop for an extended period, caused by the HTTPHeaders.add method. The function accumulates values using string concatenation...

EUVD-2023-57695

Malicious code in bioql PyPI...

jetty-http2-common: Jetty HTTP/2 Header List Size Vulnerability

A flaw was found in Eclipse Jetty. This vulnerability allows denial of service attack via an HTTP/2 client specifying a very large value for the SETTINGSMAXHEADERLISTSIZE parameter...

jetty-http2-common: Jetty HTTP/2 Header List Size Vulnerability

A flaw was found in Eclipse Jetty. This vulnerability allows denial of service attack via an HTTP/2 client specifying a very large value for the SETTINGSMAXHEADERLISTSIZE parameter...

undertow: AJP Request closes connection exceeding maxRequestSize

A flaw was found in Undertow. When an AJP request is sent that exceeds the max-header-size attribute in ajp-listener, JBoss EAP is marked in an error state by modcluster in httpd, causing JBoss EAP to close the TCP connection without returning an AJP response. This happens because modproxycluster...

undertow: AJP Request closes connection exceeding maxRequestSize

A flaw was found in Undertow. When an AJP request is sent that exceeds the max-header-size attribute in ajp-listener, JBoss EAP is marked in an error state by modcluster in httpd, causing JBoss EAP to close the TCP connection without returning an AJP response. This happens because modproxycluster...

DEBIAN-CVE-2025-38053

In the Linux kernel, the following vulnerability has been resolved: idpf: fix null-ptr-deref in idpffeaturescheck idpffeaturescheck is used to validate the TX packet. skb header length is compared with the hardware supported value received from the device control plane. The value is stored in the...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: idpf: fixed null-ptr-deref in idpffeaturescheck idpffeaturescheck is used to validate the TX packet. The length of the skb header is compared with the value supported by the hardware, which is received from the device control...

kernel: netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6()

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfrejectipv6: fix potential crash in nfsendreset6 I got a syzbot report without a repro 1 crashing in nfsendreset6 I think the issue is that dev-hardheaderlen is zero, and we attempt later to push an Ethernet header. U...

JDK: HTTP client improper handling of maxHeaderSize (8328286)

Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE component: Networking. Supported versions that are affected are Oracle Java SE: 8u421, 8u421-perf, 11.0.24, 17.0.12, 21.0.4, 23; Oracle GraalVM for JDK: 17.0.12, 21.0.4, 23;...

DEBIAN-CVE-2024-50256

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfrejectipv6: fix potential crash in nfsendreset6 I got a syzbot report without a repro 1 crashing in nfsendreset6 I think the issue is that dev-hardheaderlen is zero, and we attempt later to push an Ethernet header. U...

UBUNTU-CVE-2024-50256

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfrejectipv6: fix potential crash in nfsendreset6 I got a syzbot report without a repro 1 crashing in nfsendreset6 I think the issue is that dev-hardheaderlen is zero, and we attempt later to push an Ethernet header. U...

CVE-2024-50256 netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6()

In the Linux kernel, the following vulnerability has been resolved: netfilter: nfrejectipv6: fix potential crash in nfsendreset6 I got a syzbot report without a repro 1 crashing in nfsendreset6 I think the issue is that dev-hardheaderlen is zero, and we attempt later to push an Ethernet header. U...

OESA-2024-2353 undertow security update

Java web server using non-blocking IO Security Fixes: A flaw was found in Undertow. A buffer leak on the incoming WebSocket PONG message may lead to memory exhaustion. This flaw allows an attacker to cause a denial of service. The highest threat from this vulnerability is availability.CVE-2021-36...