CVE-2026-65898

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Source
https://cve.org/CVERecord?id=CVE-2026-65898
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-65898.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-65898
Aliases
Downstream
Related
Published
2026-07-23T13:16:17.715Z
Modified
2026-07-25T04:14:50.514831328Z
Severity
  • 5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N CVSS Calculator
Summary
DOMPurify before 3.4.11 Permanent Attribute Allowlist Pollution via setConfig
Details

DOMPurify before 3.4.11 fails to clone the ALLOWED_ATTR allowlist when setConfig() is used with an uponSanitizeAttribute hook, allowing the hook to permanently mutate the shared allowlist. Attackers can register a hook that conditionally allows dangerous attributes like onerror for trusted elements, then submit untrusted content that inherits the polluted allowlist and executes event handlers as stored XSS.

Database specific 
{
    "cwe_ids": [
        "CWE-79"
    ],
    "cna_assigner": "VulnCheck",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65898.json"
}
References

Affected packages

Git / github.com/cure53/dompurify

Affected ranges

Type
GIT
Repo
https://github.com/cure53/dompurify
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
0cae5187403132f96a6d357649e4b15633fc210a
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.4.11"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

0.*
0.1
0.3
0.4
0.4.2
0.4.3
0.4.4
0.4.5
0.6.0
0.6.1
0.6.2
0.6.3
0.6.4
0.6.5
0.6.6
0.6.7
0.7.0
0.7.1
0.7.2
0.7.3
0.8.0
0.8.1
0.8.2
0.8.3
0.8.4
0.8.5
0.8.6
0.8.7
0.8.8
0.8.9
0.9.0
1.*
1.0.0
1.0.1
1.0.10
1.0.11
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.0.8
1.0.9
2.*
2.0.0
2.0.1
2.0.10
2.0.11
2.0.12
2.0.13
2.0.14
2.0.15
2.0.16
2.0.17
2.0.2
2.0.3
2.0.4
2.0.5
2.0.6
2.0.8
2.0.9
2.1.0
2.1.1
2.2.0
2.2.2
2.2.3
2.2.4
2.2.6
2.2.7
2.2.8
2.2.9
2.3.0
2.3.1
2.3.10
2.3.11
2.3.12
2.3.2
2.3.3
2.3.4
2.3.5
2.3.6
2.3.8
2.3.9
2.4.0
2.4.1
2.4.2
2.4.3
3.*
3.0.4
3.1.3
3.2.3
3.3.3
3.4.0
3.4.1
3.4.10
3.4.2
3.4.3
3.4.4
3.4.5
3.4.6
3.4.7
3.4.8
3.4.9
v0.*
v0.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-65898.json"