Cross-site Scripting (XSS)

ProseMirror is vulnerable to Cross-Site Scripting XSS. The vulnerability is due to insufficient validation of attributes in clipboard slice context during paste handling, which allows an attacker to craft malicious HTML that executes attacker-controlled JavaScript in the browser window containing...

NPM: ProseMirror has a XSS vulnerability in prosemirror-view's paste handling

NPM: ProseMirror has a XSS vulnerability in prosemirror-view's paste handling discovered by ? in WordPress Npm prosemirror-view versions 1.42.3...

EUVD-2026-91749

ProseMirror has a XSS vulnerability in prosemirror-view's paste handling...

@9troisquarts/ant-form (>=2.0.1, <=4.0.5), @activepieces/piece-jira-cloud (>=0.1.13, <=0.3.6) +658 more potentially affected by CVE-2026-104847 via prosemirror-view (>=1.3.0, <=1.42.2)

prosemirror-view NPM version =1.3.0, =2.0.1, =0.1.13, =3.0.0-beta.4, =0.4.0, =11.21.3, =0.1.0, =11.19.4, =11.13.0, =0.0.1, =0.0.1, =13.1.0, =1.7.5, =4.0.4 and more Source cves: CVE-2026-104847 Source advisory: OSV:GHSA-C8X8-7FP4-3X9W...

ProseMirror has a XSS vulnerability in prosemirror-view's paste handling

Impact When a user pastes attacker-provided HTML into a ProseMirror editor component, this can cause attacker-controlled JavaScript code to run in the browser window containing the editor. Patches Version 1.42.3 adds validation that prevents this attack. Workarounds No known workarounds...

GHSA-C8X8-7FP4-3X9W ProseMirror has a XSS vulnerability in prosemirror-view's paste handling

Impact When a user pastes attacker-provided HTML into a ProseMirror editor component, this can cause attacker-controlled JavaScript code to run in the browser window containing the editor. Patches Version 1.42.3 adds validation that prevents this attack. Workarounds No known workarounds...

CVE-2026-104847

ProseMirror's view component renders and manages the editable browser interface for ProseMirror documents. Prior to 1.42.3, prosemirror-view paste handling accepts attacker-provided HTML whose clipboard slice context contains attributes that are not passed through schema attribute validation. Whe...

CVE-2026-104847 ProseMirror: XSS vulnerability in prosemirror-view's paste handling

ProseMirror's view component renders and manages the editable browser interface for ProseMirror documents. Prior to 1.42.3, prosemirror-view paste handling accepts attacker-provided HTML whose clipboard slice context contains attributes that are not passed through schema attribute validation. Whe...

CVE-2026-104847 ProseMirror: XSS vulnerability in prosemirror-view's paste handling

ProseMirror's view component renders and manages the editable browser interface for ProseMirror documents. Prior to 1.42.3, prosemirror-view paste handling accepts attacker-provided HTML whose clipboard slice context contains attributes that are not passed through schema attribute validation. Whe...

CVE-2026-104847 ProseMirror: XSS vulnerability in prosemirror-view's paste handling

ProseMirror's view component renders and manages the editable browser interface for ProseMirror documents. Prior to 1.42.3, prosemirror-view paste handling accepts attacker-provided HTML whose clipboard slice context contains attributes that are not passed through schema attribute validation. Whe...

CVE-2026-104847

The prosemirror-view component in ProseMirror (prior to version 1.42.3 ) is vulnerable to a Cross-Site Scripting (XSS) flaw. The issue arises because the paste handling mechanism accepts attacker-provided HTML where clipboard slice context attributes bypass schema attribute validation . An attack...

@9troisquarts/ant-form (>=2.0.1, <=4.0.5), @activepieces/piece-jira-cloud (>=0.1.13, <=0.3.6) +672 more potentially affected by CVE-2026-104847 via prosemirror-view (>=0.11.2, <=1.42.2)

prosemirror-view NPM version =0.11.2, =2.0.1, =0.1.13, =3.0.0-beta.4, =0.4.0, =11.21.3, =0.1.0, =11.19.4, =11.13.0, =0.0.1, =0.0.1, =13.1.0, =1.7.5, =4.0.4 and more Source cves: CVE-2026-104847 Source advisory: MEND:CVE-2026-104847...

CVE-2026-104847

ProseMirror's view component renders and manages the editable browser interface for ProseMirror documents. Prior to 1.42.3, prosemirror-view paste handling accepts attacker-provided HTML whose clipboard slice context contains attributes that are not passed through schema attribute validation. Whe...

CVE-2026-104847: Improper Neutralization of Input During Web Page Generation

ProseMirror's view component renders and manages the editable browser interface for ProseMirror documents. Prior to 1.42.3, prosemirror-view paste handling accepts attacker-provided HTML whose clipboard slice context contains attributes that are not passed through schema attribute validation. Whe...

PT-2026-104395

Name of the Vulnerable Software and Affected Versions prosemirror-view versions prior to 1.42.3 Description The view component, which manages the editable browser interface for documents, contains a flaw in its paste handling. It accepts attacker-provided HTML where the clipboard slice context...

Tiptap: mergeAttributes() turns an own __proto__ key into inherited executable DOM attributes

Summary @tiptap/core's public mergeAttributes helper uses ordinary bracket assignment on keys returned by Object.entries. An own proto key from JSON therefore invokes the legacy prototype setter on the fresh merged object. The function returns an object whose prototype is attacker-controlled, whi...

GHSA-CP6Q-959Q-F8RH Tiptap: mergeAttributes() turns an own __proto__ key into inherited executable DOM attributes

Summary @tiptap/core's public mergeAttributes helper uses ordinary bracket assignment on keys returned by Object.entries. An own proto key from JSON therefore invokes the legacy prototype setter on the fresh merged object. The function returns an object whose prototype is attacker-controlled, whi...

PT-2026-90708

Summary @tiptap/core's public mergeAttributes helper uses ordinary bracket assignment on keys returned by Object.entries. An own proto key from JSON therefore invokes the legacy prototype setter on the fresh merged object. The function returns an object whose prototype is attacker-controlled, whi...

Cross-site Scripting (XSS)

prosemirrortohtml is vulnerable to Cross-site Scripting XSS. The vulnerability is due to improper escaping of HTML attribute values, which allows an attacker to inject and execute arbitrary JavaScript code through crafted input...

GHSA-4249-GJR8-JPQ3 Duplicate Advisory: ProsemirrorToHtml has a Cross-Site Scripting (XSS) vulnerability through unescaped HTML attribute values

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-52c5-vh7f-26fx. This link is maintained to preserve external references. Original Description Impact The prosemirrortohtml gem is vulnerable to Cross-Site Scripting XSS attacks through malicious HTML attribute...