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 SAFE_FOR_XML regex. Attackers can include payloads like in attribute values to execute JavaScript when sanitized output is placed inside these unprotected rawtext contexts.

Database specific

{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-79"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/0xxx/CVE-2026-0540.json"
}

References

Affected packages

Git / github.com/cure53/dompurify

Affected ranges

Type

GIT

Repo

https://github.com/cure53/dompurify

Events

Introduced

e1ddfc7b5e6d6599c369f826699b0204e2c691b9

Last Affected

ee992fc4880215757c9c09e9638bb95e1dc24533

Introduced

3fe78d7501103832166613bb1452985dd4674008

Fixed

302b51de22535cc90235472c52e3401bedd46f80

Fixed

5e56114cb24079ce52dbc51f76e494b77afa5153

Database specific

Show details

{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:cure53:dompurify:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "2.5.3"
                },
                {
                    "last_affected":  "2.5.8"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "cpe":  "cpe:2.3:a:cure53:dompurify:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "3.1.3"
                },
                {
                    "last_affected":  "3.3.1"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "range":  [
                {
                    "fixed":  "302b51de22535cc90235472c52e3401bedd46f80"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "3.3.2",
            "range":  [
                {
                    "fixed":  "5e56114cb24079ce52dbc51f76e494b77afa5153"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

2.*

2.5.3

2.5.4

2.5.5

2.5.6

2.5.7

2.5.8

3.*

3.1.3

3.2.3

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-0540.json"