CVE-2026-47423

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. In 3.4.4, DOMPurify allowed selectedcontent by default, allowing browsers to re-clone an XSS payload after sanitization so that unsanitized markup inside is returned. This issue is fixed in version 3.4.5...

CVE-2026-47423

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. In 3.4.4, DOMPurify allowed selectedcontent by default, allowing browsers to re-clone an XSS payload after sanitization so that unsanitized markup inside is returned. This issue is fixed in version 3.4.5...

EUVD-2026-44443

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. In 3.4.4, DOMPurify allowed selectedcontent by default, allowing browsers to re-clone an XSS payload after sanitization so that unsanitized markup inside is returned. This issue is fixed in version 3.4.5...

CVE-2026-47423

DOMPurify 3.4.4 contains a default allowlist misconfiguration that lets the selectedcontent element bypass sanitization by browser re-cloning after DOMPurify processes the subtree. This creates an XSS risk when attacker-controlled HTML is sanitized and then inserted (e.g., via innerHTML), since t...

CVE-2026-47423 DOMPurify XSS via `selectedcontent` re-clone

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. In 3.4.4, DOMPurify allowed selectedcontent by default, allowing browsers to re-clone an XSS payload after sanitization so that unsanitized markup inside is returned. This issue is fixed in version 3.4.5...

CVE-2026-47423 DOMPurify XSS via `selectedcontent` re-clone

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. In 3.4.4, DOMPurify allowed selectedcontent by default, allowing browsers to re-clone an XSS payload after sanitization so that unsanitized markup inside is returned. This issue is fixed in version 3.4.5...

PYSEC-2026-2731 Open WebUI has stored XSS via unsanitized Office/Excel/DOCX file preview rendering ({@html} without DOMPurify)

Related advisory This advisory tracks a regression of the original Excel-preview XSS that was publicly disclosed and patched under GHSA-jwf8-pv5p-vhmc patched in v0.8.0. The same root cause — XLSX.utils.sheettohtml output rendered via @html excelHtml without DOMPurify — was reintroduced sometime...

PYSEC-2026-2724 Open WebUI has Stored XSS in Pending User Overlay via Incorrect DOMPurify Application Order

Vulnerability Details CWE-79: Cross-site Scripting XSS The AccountPending.svelte component renders the admin-configured "Pending User Overlay Content" using marked.parse inside @html with an incorrect DOMPurify application order: Vulnerable Code...

DOMPurify: DOMPurify: Cross-Site Scripting (XSS) via inconsistent tag sanitization

A flaw was found in DOMPurify, a DOM-only cross-site scripting sanitizer. A remote attacker could exploit an inconsistency in how forbidden tags and attributes are handled when function-based tag additions are used. This allows malicious HTML, MathML, or SVG elements to bypass sanitization and...

Improper Trusted Types Policy Reuse

DOMPurify is vulnerable to improper trusted types policy reuse. The vulnerability is due to the reuse of a previously supplied TRUSTEDTYPESPOLICY after clearConfig is called, which allows an attacker to obtain a TrustedHTML object generated under an unintended policy when RETURNTRUSTEDTYPE is...

Improper Neutralization Of Template Expressions

DOMPurify is vulnerable to improper neutralization of template expressions. The vulnerability is due to improper sanitization when both SAFEFORTEMPLATES: true and RETURNDOM: true or INPLACE: true are enabled, which allows an attacker to inject template expressions e.g., $evil, evil, or that remai...

Stored Cross-Site Scripting (XSS)

DOMPurify is vulnerable to stored cross-site scripting XSS. The vulnerability is due to the setConfig API bypassing the parseConfig clone protection, allowing an uponSanitizeAttribute hook to permanently modify the shared attribute allowlist, which allows an attacker to persistently enable...

Cross-Site Scripting (XSS)

DOMPurify is vulnerable to Cross-Site Scripting XSS. The vulnerability is due to hooks being able to modify live references to the default ALLOWEDTAGS and ALLOWEDATTR sets, which permanently alters the sanitizer's default configuration and allows an attacker to persistently bypass sanitization by...

Security Bulletin: IBM i is Affected By Multiple Vulnerabilities in Navigator for i and Digital Certifcate Manager

Summary Navigator for IBM i uses DOMPurify for cross-site scripting sanitization. DOMPurify is vulnerable to prototype pollution-based XSS bypass CVE-2026-41238, skipped sanitization in non-string mode CVE-2026-41239, and skipped sanitization when using the ADDTAGS function CVE-2026-41240...

Security Bulletin: DataStage on Cloud Pak for Data has several vulnerabilities due to open source software

Summary Open source packages are used as part of the overall processing in DataStage on Cloud Pak for Data. Vulnerability Details CVEID:CVE-2026-2581 DESCRIPTION: This is an uncontrolled resource consumption vulnerability CWE-400 that can lead to Denial of Service DoS. In vulnerable Undici...

Cross-Site Scripting (XSS)

DOMPurify is vulnerable to Cross-Site Scripting XSS. The vulnerability is due to DOMPurify skipping the contents of shadow DOM elements inside HTML elements during sanitization, which allows an attacker to embed malicious payloads that execute when the template is cloned and inserted into the pag...

Cross-site Scripting (XSS)

DOMPurify is vulnerable to cross-site scripting XSS. The vulnerability is due to the use of realm-specific instanceof checks when sanitizing DOM nodes from a different same-origin realm, which allows an attacker to bypass sanitization for form attributes, template content, and shadow DOM, leading...

GHSA-H5JC-78HR-3PC9 Sveltia CMS: Stored XSS in Markdown/RichText preview via unsandboxed same-origin iframe

Impact A stored cross-site scripting XSS vulnerability affected the Markdown/RichText field preview renderer in Sveltia CMS. The DOMPurify sanitization configuration used for Markdown previews explicitly permitted iframe elements without enforcing a sandbox attribute or restricting iframe sources...

CVE-2026-12048

Stored cross-site scripting in pgAdmin 4's error-rendering and plan-node-rendering paths. Text returned by a PostgreSQL server ErrorResponse messages, including object names quoted back inside relation-does-not-exist errors and inside EXPLAIN Recheck Cond / Exact Heap Blocks fields was passed...

CVE-2026-12048

CVE-2026-12048 affects pgAdmin 4 (versions 6.0 up to 9.16). Stored XSS occurs when untrusted server-returned text is passed through html-react-parser in multiple user-facing sinks (toasts, dialogs, explain visualiser, SQL editor prompts, etc.), allowing an attacker-controlled PostgreSQL server to...