Bug 2500676 (CVE-2026-49459)
| Summary: | CVE-2026-49459 dompurify: DOMPurify: Cross-site scripting bypass allows arbitrary script execution | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security <prodsec-ir-bot> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | abarbaro, alizardo, amctagga, anjoseph, anpicker, aoconnor, ataylor, bniver, bparees, cdrage, dbruscin, dkeler, dschmidt, ehugonne, flucifre, fmariani, gmalinko, gmeno, gparvin, groman, hasun, janstey, jchui, jfula, jhe, jlanda, jowilson, jprabhak, jwong, jwon, kaycoth, kbempah, kshier, ktsao, kvanderr, manissin, mbenjamin, mcarlett, mhackett, nboldt, nyancey, oaljalju, omaciel, ometelka, pjindal, psrna, ptisnovs, rhaigner, rstepani, rushinde, sdawley, simaishi, solenoci, sostapov, stcannon, suppawar, syedriko, tcunning, teagle, thason, ttakamiy, vereddy, wtam, xdharmai, yfang, yguenane |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
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| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in DOMPurify, a library designed to sanitize HTML, MathML, and SVG to prevent cross-site scripting (XSS) attacks. A remote attacker could exploit a vulnerability in the `DOMPurify.sanitize` function when used with the `IN_PLACE: true` option. This flaw allows an attacker to bypass the sanitizer and inject malicious event-handler attributes into an attacker-controlled form element. Successful exploitation could lead to the execution of arbitrary scripts in the user's browser, potentially compromising user data or session integrity.
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Story Points: | --- |
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| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
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| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
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DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.6, DOMPurify.sanitize(root, { IN_PLACE: true }) could preserve event-handler attributes on an attacker-controlled <form> root when a descendant name clobbered properties checked by _isClobbered, because _forceRemove no-opped on the parent-less root and _sanitizeAttributes returned early. This issue is fixed in version 3.4.6.