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Vulnerability Details :

CVE-2026-65914

Summary
Assigner-VulnCheck
Assigner Org ID-83251b91-4cc7-4094-a5c7-464a1b83ea10
Published At-23 Jul, 2026 | 13:16
Updated At-23 Jul, 2026 | 13:57
Rejected At-
Credits

DOMPurify before 3.3.2 Mutation XSS via Re-Contextualization

DOMPurify before 3.3.2 contains a mutation-XSS vulnerability when sanitized HTML is reinserted into special parsing contexts using innerHTML with wrappers like script, xmp, iframe, noembed, noframes, or noscript. Attackers can craft payloads with closing sequences that break out of the wrapper context during reparsing, reactivating dangerous markup with event handlers to execute JavaScript.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:VulnCheck
Assigner Org ID:83251b91-4cc7-4094-a5c7-464a1b83ea10
Published At:23 Jul, 2026 | 13:16
Updated At:23 Jul, 2026 | 13:57
Rejected At:
▼CVE Numbering Authority (CNA)
DOMPurify before 3.3.2 Mutation XSS via Re-Contextualization

DOMPurify before 3.3.2 contains a mutation-XSS vulnerability when sanitized HTML is reinserted into special parsing contexts using innerHTML with wrappers like script, xmp, iframe, noembed, noframes, or noscript. Attackers can craft payloads with closing sequences that break out of the wrapper context during reparsing, reactivating dangerous markup with event handlers to execute JavaScript.

Affected Products
Vendor
cure53
Product
DOMPurify
Default Status
unaffected
Versions
Affected
  • From 0 before 3.3.2 (semver)
Unaffected
  • 3.3.2 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Type: CWE
CWE ID: CWE-79
Description: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Metrics
VersionBase scoreBase severityVector
4.05.3MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Version: 4.0
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
reporter
researchatfluidattacks
finder
caverav
finder
tachote
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/cure53/DOMPurify/security/advisories/GHSA-h8r8-wccr-v5f2
vendor-advisory
https://www.vulncheck.com/advisories/dompurify-before-mutation-xss-via-re-contextualization
third-party-advisory
Hyperlink: https://github.com/cure53/DOMPurify/security/advisories/GHSA-h8r8-wccr-v5f2
Resource:
vendor-advisory
Hyperlink: https://www.vulncheck.com/advisories/dompurify-before-mutation-xss-via-re-contextualization
Resource:
third-party-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/cure53/DOMPurify/security/advisories/GHSA-h8r8-wccr-v5f2
exploit
Hyperlink: https://github.com/cure53/DOMPurify/security/advisories/GHSA-h8r8-wccr-v5f2
Resource:
exploit
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:disclosure@vulncheck.com
Published At:23 Jul, 2026 | 14:18
Updated At:23 Jul, 2026 | 15:11

DOMPurify before 3.3.2 contains a mutation-XSS vulnerability when sanitized HTML is reinserted into special parsing contexts using innerHTML with wrappers like script, xmp, iframe, noembed, noframes, or noscript. Attackers can craft payloads with closing sequences that break out of the wrapper context during reparsing, reactivating dangerous markup with event handlers to execute JavaScript.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.05.3MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/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
N/A
Type: Secondary
Version: 4.0
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/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
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-79Primarydisclosure@vulncheck.com
CWE ID: CWE-79
Type: Primary
Source: disclosure@vulncheck.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/cure53/DOMPurify/security/advisories/GHSA-h8r8-wccr-v5f2disclosure@vulncheck.com
N/A
https://www.vulncheck.com/advisories/dompurify-before-mutation-xss-via-re-contextualizationdisclosure@vulncheck.com
N/A
https://github.com/cure53/DOMPurify/security/advisories/GHSA-h8r8-wccr-v5f2134c704f-9b21-4f2e-91b3-4a467353bcc0
N/A
Hyperlink: https://github.com/cure53/DOMPurify/security/advisories/GHSA-h8r8-wccr-v5f2
Source: disclosure@vulncheck.com
Resource: N/A
Hyperlink: https://www.vulncheck.com/advisories/dompurify-before-mutation-xss-via-re-contextualization
Source: disclosure@vulncheck.com
Resource: N/A
Hyperlink: https://github.com/cure53/DOMPurify/security/advisories/GHSA-h8r8-wccr-v5f2
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource: N/A

Change History

0
Information is not available yet

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