Denial of Service (DoS)

Overview golang.org/x/net/html is a package that implements an HTML5-compliant tokenizer and parser. Affected versions of this package are vulnerable to Denial of Service DoS in the addText and fosterParent functions of the html package. An attacker can force quadratic allocations and byte copies...

CVE-2026-78661: golang.org/x/net golang.org/x/net/html: When coalescing adjacent text nodes in addText and fosterParent, appending to an existing TextNode's Data via string…

When coalescing adjacent text nodes in addText and fosterParent, appending to an existing TextNode's Data via string concatenation n.Data += text reallocated and copied the accumulated string on every token. Inputs containing many short text runs separated by ignored end tags such as "a" caused...

golang.org/x/net/html: golang: golang.org/x/net/html: Cross-Site Scripting via unexpected HTML tree rendering

A flaw was found in golang.org/x/net/html. This vulnerability allows an attacker to manipulate how HTML is processed and displayed. By providing specially crafted HTML, an attacker can cause an unexpected structure in the rendered output. This can lead to Cross-Site Scripting XSS attacks, where...

golang.org/x/net/html: golang.org/x/net/html: Arbitrary code execution via Cross-Site Scripting

A flaw was found in golang.org/x/net/html. A remote attacker could exploit this vulnerability by providing specially crafted HTML. When this arbitrary HTML is parsed and rendered, it can result in an unexpected HTML tree, bypassing input sanitization. This can be leveraged to execute Cross-Site...

golang.org/x/net/html: golang: golang.org/x/net/html: Cross-Site Scripting via HTML parsing bypass

A flaw was found in golang.org/x/net/html. When arbitrary HTML is parsed and then rendered, it can result in an unexpected HTML tree. This allows an attacker to bypass HTML sanitization mechanisms, leading to Cross-Site Scripting XSS attacks in applications. Such attacks can result in information...

golang.org/x/net/html: golang: golang.org/x/net/html: Cross-Site Scripting via HTML parsing bypass

A flaw was found in golang.org/x/net/html. When arbitrary HTML is parsed and then rendered, it can result in an unexpected HTML tree. This allows an attacker to bypass HTML sanitization mechanisms, leading to Cross-Site Scripting XSS attacks in applications. Such attacks can result in information...

golang.org/x/net/html: golang: golang.org/x/net/html: Cross-Site Scripting via unexpected HTML tree rendering

A flaw was found in golang.org/x/net/html. This vulnerability allows an attacker to manipulate how HTML is processed and displayed. By providing specially crafted HTML, an attacker can cause an unexpected structure in the rendered output. This can lead to Cross-Site Scripting XSS attacks, where...

golang.org/x/net/html: golang.org/x/net/html: Arbitrary code execution via Cross-Site Scripting

A flaw was found in golang.org/x/net/html. A remote attacker could exploit this vulnerability by providing specially crafted HTML. When this arbitrary HTML is parsed and rendered, it can result in an unexpected HTML tree, bypassing input sanitization. This can be leveraged to execute Cross-Site...

MiracleLinux 9 : osbuild-composer-165.1-5.el9_8.ML.1 (AXSA:2026-1978:12)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-1978:12 advisory. golang.org/x/net/html: golang: golang.org/x/net/html: Cross-Site Scripting via HTML parsing bypass CVE-2026-27136 golang.org/x/net/html:...

Important: Red Hat Security Advisory: OpenShift Container Platform 4.20.41 security and extras update

Red Hat OpenShift Container Platform release 4.20.41 is now available with updates to packages and images that fix several bugs. This release includes a security update for Red Hat OpenShift Container Platform 4.20. Red Hat Product Security has rated this update as having a security impact of...

CLSA-2026-1791320512 osbuild-composer: Fix of CVE-2026-42502

CVE-2026-42502: treat foster-parented raw-text elements in foreign content as escaped rather than literal in the vendored golang.org/x/net/html renderer, preventing a cross-site scripting bypass when a parsed tree is re-rendered...

Important: Red Hat Security Advisory: OpenShift Container Platform 4.22.17 security and extras update

Red Hat OpenShift Container Platform release 4.22.17 is now available with updates to packages and images that fix several bugs. This release includes a security update for Red Hat OpenShift Container Platform 4.22. Red Hat Product Security has rated this update as having a security impact of...

Important: Red Hat Security Advisory: OpenShift Container Platform 4.21.36 security and extras update

Red Hat OpenShift Container Platform release 4.21.36 is now available with updates to packages and images that fix several bugs. This release includes a security update for Red Hat OpenShift Container Platform 4.21. Red Hat Product Security has rated this update as having a security impact of...

Rocky Linux 9 [CIQ] Security Update: image-builder / image-builder-debuginfo / image-builder-debugsource Multiple Vulnerabilities (crlsa-2026_67138)

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202667138 advisory. golang.org/x/net/html: golang: golang.org/x/net/html: Cross-Site Scripting via HTML parsing bypass CVE-2026-27136 golang.org/x/net/html:...

Rocky Linux 10.2 [CIQ] Security Update: image-builder / image-builder-debuginfo / image-builder-debugsource Multiple Vulnerabilities (crlsa-2026_67139)

The Rocky Linux 10.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202667139 advisory. golang.org/x/net/html: golang: golang.org/x/net/html: Cross-Site Scripting via HTML parsing bypass CVE-2026-27136 golang.org/x/net/html:...

Rocky Linux 10.2 [CIQ] Security Update: podman / podman-debuginfo / podman-debugsource / podman-docker / etc Multiple Vulnerabilities (crlsa-2026_37072)

The Rocky Linux 10.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202637072 advisory. golang.org/x/crypto/ssh: golang: golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate CVE-2026-39835 golang.org/x/crypto/ssh:...

RLSA-2026:69293 Important: osbuild-composer security update

A service for building customized OS artifacts, such as VM images and OSTree commits, that uses osbuild under the hood. Besides building images for local usage, it can also upload images directly to cloud. It is compatible with composer-cli and cockpit-composer clients. Security Fixes:...

RockyLinux 9 : osbuild-composer (RLSA-2026:69293)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:69293 advisory. golang.org/x/net/html: golang: golang.org/x/net/html: Cross-Site Scripting via HTML parsing bypass CVE-2026-27136 golang.org/x/net/html:...

Important: Red Hat Security Advisory: osbuild-composer security update

An update for osbuild-composer is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerabili...

golang.org/x/net/html: golang.org/x/net/html: Arbitrary code execution via Cross-Site Scripting

A flaw was found in golang.org/x/net/html. A remote attacker could exploit this vulnerability by providing specially crafted HTML. When this arbitrary HTML is parsed and rendered, it can result in an unexpected HTML tree, bypassing input sanitization. This can be leveraged to execute Cross-Site...