CVE-2026-41239

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Starting in version 1.0.10 and prior to version 3.4.0, SAFE_FOR_TEMPLATES strips {{...}} expressions from untrusted HTML. This works in string mode but not with RETURN_DOM or RETURN_DOM_FRAGMENT, allowing XSS via template-evaluating frameworks like Vue 2. Version 3.4.0 patches the issue.

Database specific

{
    "cwe_ids": [
        "CWE-1289",
        "CWE-79"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41239.json"
}

References

Affected packages

Git / github.com/cure53/dompurify

Affected ranges

Type: GIT
Repo: https://github.com/cure53/dompurify
Events: Introduced

b537cab466329b1b077e0e5e3c14edad2b7142f7

Fixed

5b16e0b892e82b1779d62b9928b43c4c4ff290b9

Affected versions

1.*

1.0.10

1.0.11

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

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-41239.json"