CVE-2026-0540
DOMPurify XSS via Missing Rawtext Elements in SAFE_FOR_XML
Description
DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in commit 729097f, contain a cross-site scripting vulnerability that allows attackers to bypass attribute sanitization by exploiting five missing rawtext elements (noscript, xmp, noembed, noframes, iframe) in the SAFE_FOR_XML regex. Attackers can include payloads like </noscript><img src=x onerror=alert(1)> in attribute values to execute JavaScript when sanitized output is placed inside these unprotected rawtext contexts.
INFO
Published Date :
March 3, 2026, 6:16 p.m.
Last Modified :
March 5, 2026, 12:03 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update DOMPurify to a patched version.
- Ensure SAFE_FOR_XML regex is updated.
- Avoid placing sanitized output in rawtext contexts.
Public PoC/Exploit Available at Github
CVE-2026-0540 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-0540.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-0540 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-0540
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Dockerfile
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-0540 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-0540 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 05, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:cure53:dompurify:*:*:*:*:*:*:*:* versions from (including) 2.5.3 up to (including) 2.5.8 *cpe:2.3:a:cure53:dompurify:*:*:*:*:*:*:*:* versions from (including) 3.1.3 up to (including) 3.3.1 Added Reference Type VulnCheck: https://github.com/cure53/DOMPurify Types: Product Added Reference Type VulnCheck: https://github.com/cure53/DOMPurify/commit/fca0a938b4261ddc9c0293a289935a9029c049f5 Types: Patch Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/dompurify-xss-via-missing-rawtext-elements-in-safe-for-xml Types: Third Party Advisory -
CVE Modified by [email protected]
Mar. 03, 2026
Action Type Old Value New Value Added Reference https://www.vulncheck.com/advisories/dompurify-xss-via-missing-rawtext-elements-in-safe-for-xml Removed Reference https://www.vulncheck.com/advisories/dompurify-xss-via-missing-rawtext-elements-in-safeforxml -
New CVE Received by [email protected]
Mar. 03, 2026
Action Type Old Value New Value Added Description DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in commit 729097f, contain a cross-site scripting vulnerability that allows attackers to bypass attribute sanitization by exploiting five missing rawtext elements (noscript, xmp, noembed, noframes, iframe) in the SAFE_FOR_XML regex. Attackers can include payloads like </noscript><img src=x onerror=alert(1)> in attribute values to execute JavaScript when sanitized output is placed inside these unprotected rawtext contexts. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Added CWE CWE-79 Added Reference https://github.com/cure53/DOMPurify Added Reference https://github.com/cure53/DOMPurify/commit/fca0a938b4261ddc9c0293a289935a9029c049f5 Added Reference https://www.vulncheck.com/advisories/dompurify-xss-via-missing-rawtext-elements-in-safeforxml