AlmaLinux 8 : nghttp2 (ALSA-2026:55804)

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:55804 advisory. nghttp2: nghttp2: HTTP Request/Response Smuggling and Response-Queue Poisoning via ambiguous HTTP/1.1 Upgrade requests CVE-2026-58055 Tenable has extracted the...

RockyLinux 8 : nghttp2 (RLSA-2026:55804)

The remote RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:55804 advisory. nghttp2: nghttp2: HTTP Request/Response Smuggling and Response-Queue Poisoning via ambiguous HTTP/1.1 Upgrade requests CVE-2026-58055 Tenable has extracted the...

.NET: .NET Core: .NET Security Feature Bypass Vulnerability

Inconsistent interpretation of http requests 'http request/response smuggling' in .NET allows an unauthorized attacker to bypass a security feature over a network...

BIT-DOTNET-2026-62899 .NET Security Feature Bypass Vulnerability

Inconsistent interpretation of http requests 'http request/response smuggling' in .NET allows an unauthorized attacker to bypass a security feature over a network...

Moderate: nghttp2 security update

libnghttp2 is a library implementing the Hypertext Transfer Protocol version 2 HTTP/2 protocol in C. Security Fixes: nghttp2: nghttp2: HTTP Request/Response Smuggling and Response-Queue Poisoning via ambiguous HTTP/1.1 Upgrade requests CVE-2026-58055 For more details about the security issues,...

.NET: .NET Core: .NET Security Feature Bypass Vulnerability

Inconsistent interpretation of http requests 'http request/response smuggling' in .NET allows an unauthorized attacker to bypass a security feature over a network...

RockyLinux 9 : nghttp2 (RLSA-2026:54662)

The remote RockyLinux 9 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:54662 advisory. nghttp2: nghttp2: HTTP Request/Response Smuggling and Response-Queue Poisoning via ambiguous HTTP/1.1 Upgrade requests CVE-2026-58055 Tenable has extracted the...

AlmaLinux 10 : nghttp2 (ALSA-2026:54650)

The remote AlmaLinux 10 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:54650 advisory. nghttp2: nghttp2: HTTP Request/Response Smuggling and Response-Queue Poisoning via ambiguous HTTP/1.1 Upgrade requests CVE-2026-58055 Tenable has extracted the...

Oracle Linux 9 : nghttp2 (ELSA-2026-54662)

The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-54662 advisory. 1.43.0-6.2 - fix HTTP Request/Response Smuggling and Response-Queue Poisoning via ambiguous HTTP/1.1 Upgrade requests CVE-2026-58055 Tenable has extracted the...

Oracle Linux 10 : nghttp2 (ELSA-2026-54650)

The remote Oracle Linux 10 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-54650 advisory. 1.68.0-3.2 - fix HTTP Request/Response Smuggling and Response-Queue Poisoning via ambiguous HTTP/1.1 Upgrade requests CVE-2026-58055 Tenable has extracted the...

Moderate: Red Hat Security Advisory: nghttp2 security update

An update for nghttp2 is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

Moderate: Red Hat Security Advisory: nghttp2 security update

An update for nghttp2 is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

nghttp2 security update

1.68.0-3.2 - fix HTTP Request/Response Smuggling and Response-Queue Poisoning via ambiguous HTTP/1.1 Upgrade requests CVE-2026-58055...

nghttp2 security update

1.43.0-6.2 - fix HTTP Request/Response Smuggling and Response-Queue Poisoning via ambiguous HTTP/1.1 Upgrade requests CVE-2026-58055...

ALSA-2026:54650 Moderate: nghttp2 security update

libnghttp2 is a library implementing the Hypertext Transfer Protocol version 2 HTTP/2 protocol in C. Security Fixes: nghttp2: nghttp2: HTTP Request/Response Smuggling and Response-Queue Poisoning via ambiguous HTTP/1.1 Upgrade requests CVE-2026-58055 For more details about the security issues,...

CVE-2026-65370

ServiceTalk HTTP/1.x incorrectly handles malformed Transfer-Encoding which could result in request smuggling attacks. This vulnerability is addressed in servicetalk version 0.42.65...

JLSEC-2026-1269

Cap'n Proto is a data interchange format and capability-based RPC system. Prior to 1.4.0, a negative Content-Length value was converted to unsigned, treating it as an impossibly large length instead. In theory, this bug could enable HTTP request/response smuggling. This vulnerability is fixed in...

JLSEC-2026-1270

Cap'n Proto is a data interchange format and capability-based RPC system. Prior to 1.4.0, when using Transfer-Encoding: chunked, if a chunk's size parsed to a value of 2^64 or larger, it would be truncated to a 64-bit integer. In theory, this bug could enable HTTP request/response smuggling. This...

Microsoft Security Advisory CVE-2026-62899 – .NET Security Feature Bypass Vulnerability

Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in System.Net.HttpListener. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. Inconsistent interpretation of http...

GHSA-R6MH-95JW-G7QG Microsoft Security Advisory CVE-2026-62899 – .NET Security Feature Bypass Vulnerability

Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in System.Net.HttpListener. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. Inconsistent interpretation of http...