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:...

CVE-2026-77912: Improper Neutralization of Input During Web Page Generation

A stored cross-site scripting XSS vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to inject arbitrary HTML attributes into rendered Markdown because the Markdown rendering pipeline rewrote quote characters in already-sanitized HTML without...

PT-2026-97038

Name of the Vulnerable Software and Affected Versions Unleash versions prior to 8.0.3 Description The change-request approval email template at src/mailtemplates/requested-cr-approval/requested-cr-approval.html.mustache renders user-controlled values without HTML escaping. The...

CVE-2026-89412: Improper Neutralization of Input During Web Page Generation

The TranslatePress – Translate Multilingual sites with AI Translation plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Translation Memory Suggestion Panel v-html on suggestion.original in all versions up to, and including, 3.3.5 due to insufficient input sanitization and outp...

CVE-2026-77272: Improper Neutralization of Input During Web Page Generation

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, the OAuth error query parameter is passed to CallbackHandler.sendresponse in oauthsetup.py and interpolated into an HTML page without escaping. A crafted authorization callback can...

CVE-2026-76909: Improper Neutralization of Input During Web Page Generation

Unleash is an open-source feature management platform. Prior to 8.0.3, the change-request approval email template at src/mailtemplates/requested-cr-approval/requested-cr-approval.html.mustache renders the user-controlled changeRequestTitle, requesterName, and requesterEmail values without HTML...

The Anatomy of HTML Attachment Phishing

The Anatomy of HTML Attachment Phishing: One Code, Many Variants By Niranjan Hegde and Sijo Jacob · June 14, 2023 This blog was also written by Mathanraj Thangaraju Introduction Phishing is the malevolent practise of pretending to be a reliable entity in electronic communication to steal sensitiv...

CVE-2026-55105 Joplin: Fountain embeds allow arbitrary script execution in published notes and the note viewer

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.6.15 and 3.7.2, packages/renderer/MdToHtml/rules/fountain.ts passes HTML generated by the vendored fountain.js renderer into note output without sanitizing it. A malicious Fountain...

CVE-2026-55105 Joplin: Fountain embeds allow arbitrary script execution in published notes and the note viewer

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.6.15 and 3.7.2, packages/renderer/MdToHtml/rules/fountain.ts passes HTML generated by the vendored fountain.js renderer into note output without sanitizing it. A malicious Fountain...

firefox: thunderbird: Use-after-free in the DOM: HTML Parser component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the DOM: HTML Parser component...

firefox: thunderbird: Sandbox escape in the DOM: Core & HTML component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape in the DOM: Core & HTML component...

firefox: thunderbird: Use-after-free in the DOM: Core & HTML component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Use-after-free in the DOM: Core & HTML component...

CVE-2026-73546

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's /stats?format=html admin endpoint uses StatsHtmlRender, which sanitizes string statistic values but emits statistic names without HTML encoding. A data-plan...

CVE-2026-84137

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Spoofing issue in the DOM: Core & HTML component...

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...

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: 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...

DEBIAN-CVE-2026-94488

Telegram Desktop before 6.9.4 allows XSS in the HTML exporter. The first fixed stable version is 7.0.1. This occurs in button.text.toUtf8 in exportoutputhtml.cpp. Exploitation cannot occur unless HTML export was used by a victim. However, the exploit payload can be exported if a message were...

CVE-2026-94488

Telegram Desktop before 6.9.4 allows XSS in the HTML exporter. The first fixed stable version is 7.0.1. This occurs in button.text.toUtf8 in exportoutputhtml.cpp. Exploitation cannot occur unless HTML export was used by a victim. However, the exploit payload can be exported if a message were...