Next.js has cross-site scripting in beforeInteractive scripts with untrusted input

Impact Applications that use beforeInteractive scripts together with untrusted content can be vulnerable to cross-site scripting. In affected versions, serialized script content was not escaped safely before being embedded into the document, which could allow attacker-controlled input to break ou...

GHSA-2H64-C999-C9R6 SiYuan Affected by Stored XSS via Attribute View Name to Electron Renderer RCE

Summary The kernel stores Attribute View AV / database names without any HTML escape, then a render template uses raw strings.ReplaceAlltpl, "$avName", nodeAvName to embed the name in HTML before pushing to all clients via WebSocket. Three independent client paths render.ts:120 → outerHTML,...

CVE-2026-42150 wlc: print_html outputs API data without HTML escaping, enabling stored XSS

wlc is a Weblate command-line client using Weblate's REST API. Prior to version 2.0.0, the HTML output format in wlc embeds API response data into HTML without escaping, allowing cross-site scripting when the output is rendered in a browser. This issue has been patched in version 2.0.0...

CVE-2026-42150 wlc: print_html outputs API data without HTML escaping, enabling stored XSS

wlc is a Weblate command-line client using Weblate's REST API. Prior to version 2.0.0, the HTML output format in wlc embeds API response data into HTML without escaping, allowing cross-site scripting when the output is rendered in a browser. This issue has been patched in version 2.0.0...

CVE-2026-42150

The vulnerability CVE-2026-42150 affects the Weblate WebCLI tool wlc. Prior to version 2.0.0, wlc’s HTML output format embeds API response data directly into HTML without escaping, enabling cross-site scripting when rendered in a browser. The issue is mitigated by upgrading to version 2.0.0 or la...

CVE-2026-42150 wlc: print_html outputs API data without HTML escaping, enabling stored XSS

wlc is a Weblate command-line client using Weblate's REST API. Prior to version 2.0.0, the HTML output format in wlc embeds API response data into HTML without escaping, allowing cross-site scripting when the output is rendered in a browser. This issue has been patched in version 2.0.0...

PT-2026-39263

Name of the Vulnerable Software and Affected Versions MCP Registry versions prior to 1.7.7 Description The public catalogue UI served at the 'GET /' endpoint is subject to stored cross-site scripting. This occurs via the server.websiteUrl field of published server.json files. The server-side...

PT-2026-39292

Name of the Vulnerable Software and Affected Versions Mistune affected versions not specified Description The math plugin in Mistune fails to sanitize user-supplied content when rendering inline math $...$ and block math $$...$$. The plugin concatenates raw input directly into the HTML output,...

GHSA-3V85-FQVH-7RXF Ech0's RSS feed renders unescaped tag names and raw-HTML markdown, stored XSS against subscribers

Summary The public RSS/Atom feed at /rss renders two attacker-controlled surfaces without HTML escaping. Tag names flow through fmt.AppendfrenderedContent, "%s", tag.Name at internal/service/common/common.go:120, and the Markdown renderer at internal/util/md/md.go does not set the html.SkipHTML...

UBUNTU-CVE-2026-44742

Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026...

CVE-2026-44742

Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026...

VulnCheck KEV: CVE-2026-44742

Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026...

CVE-2026-44742

Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026...

CVE-2026-40296

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The HTML writer skips htmlspecialchars escaping when a cell's formatted value differs from the original value. When a cell has a custom number format containing the text placeholder @ along with any additional literal...

CVE-2026-40296

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The HTML writer skips htmlspecialchars escaping when a cell's formatted value differs from the original value. When a cell has a custom number format containing the text placeholder @ along with any additional literal...

EUVD-2026-28221

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. The HTML writer skips htmlspecialchars escaping when a cell's formatted value differs from the original value. When a cell has a custom number format containing the text placeholder @ along with any additional literal...

GHSA-V2V4-37R5-5V8G ip-address has XSS in Address6 HTML-emitting methods

Summary Address6.group and Address6.link do not HTML-escape attacker-controlled content before embedding it in the HTML strings they return, and AddressError.parseMessage emitted by the Address6 constructor for invalid input can contain unescaped attacker-controlled content in one branch. An...

PT-2026-37294

Name of the Vulnerable Software and Affected Versions AVideo versions prior to 29.1 Description An issue exists where the 'plugin/Meet/iframe.php' endpoint echoes the user and pass query parameters unescaped into a JavaScript double-quoted string literal within a block. This allows an attacker to...

PT-2026-37267

Name of the Vulnerable Software and Affected Versions ip-address versions prior to 10.1.1 Description The software fails to HTML-escape attacker-controlled content before embedding it in HTML strings. This occurs in the Address6.group and Address6.link functions, as well as within the...

CVE-2026-42090 Notesnook: RCE via stored XSS in note export rendering

Notesnook is a note-taking app focused on user privacy & ease of use. Prior to Notesnook Web/Desktop version 3.3.15 and prior to Notesnook iOS/Android version 3.3.20, a stored XSS vulnerability in the note export flow can be escalated to remote code execution in the desktop app. The root cause is...