Is there a public exploit for CVE-2026-0540?

No public exploit for CVE-2026-0540 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-0540?

CVE-2026-0540 scores CVSS 5.3 (v4.0), rated medium. EPSS puts the chance of exploitation in the next 30 days at 0.39%.

What does CVE-2026-0540 affect?

CVE-2026-0540 affects cure53 DOMPurify.

5.3 Medium

DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in commit 2726c74, contain a cross-site scripting vulnerability that allows…

CVE-2026-0540

DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in commit 2726c74, 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 SAFEFORXML regex. Attackers can include payloads like in attribute values to execute JavaScript when sanitized output is placed inside these unprotected rawtext contexts.

Assessment

CVSS: 5.3 (v4.0)
Severity: Medium
EPSS: 0.39% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 3 March 2026
Last updated: 17 June 2026
Affected: cure53 · DOMPurify
Weakness: CWE-79
Assigner: help@fluidattacks.com

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

At the source

References

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