Vulnerability-Lookup

ubuntu-cve-2026-0540

Vulnerability from osv_ubuntu

Published

2026-03-03 18:16

Modified

2026-07-24 13:08

Summary

Details

DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in commit 729097f, 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.

Severity

6.1 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

6.1 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

5.3 (Medium)


                    
                      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

5.1 (Medium)


                    
                      CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-0540	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-0540	REPORT
	https://github.com/cure53/DOMPurify	REPORT
	https://github.com/cure53/DOMPurify/commit/fca0a9…	REPORT
	https://www.vulncheck.com/advisories/dompurify-xs…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-dompurify",
            "binary_version": "2.3.3+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "node-dompurify",
        "purl": "pkg:deb/ubuntu/node-dompurify@2.3.3+dfsg-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.3.0+dfsg-2",
        "2.3.3+dfsg-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-dompurify",
            "binary_version": "3.0.9+dfsg+~3.0.5-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "node-dompurify",
        "purl": "pkg:deb/ubuntu/node-dompurify@3.0.9+dfsg+~3.0.5-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.1+dfsg+~2.4.0-1",
        "3.0.9+dfsg+~3.0.5-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-dompurify",
            "binary_version": "3.1.7+dfsg+~3.0.5-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "node-dompurify",
        "purl": "pkg:deb/ubuntu/node-dompurify@3.1.7+dfsg+~3.0.5-2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.1.7+dfsg+~3.0.5-1",
        "3.1.7+dfsg+~3.0.5-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-dompurify",
            "binary_version": "3.3.3+dfsg-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "node-dompurify",
        "purl": "pkg:deb/ubuntu/node-dompurify@3.3.3+dfsg-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.1.7+dfsg+~3.0.5-2",
        "3.3.3+dfsg-1"
      ]
    }
  ],
  "aliases": [],
  "details": "DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in commit 729097f, 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 \u003c/noscript\u003e\u003cimg src=x onerror=alert(1)\u003e in attribute values to execute JavaScript when sanitized output is placed inside these unprotected rawtext contexts.",
  "id": "UBUNTU-CVE-2026-0540",
  "modified": "2026-07-24T13:08:41Z",
  "published": "2026-03-03T18:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-0540"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-0540"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/cure53/DOMPurify"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/cure53/DOMPurify/commit/fca0a938b4261ddc9c0293a289935a9029c049f5"
    },
    {
      "type": "REPORT",
      "url": "https://www.vulncheck.com/advisories/dompurify-xss-via-missing-rawtext-elements-in-safe-for-xml"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-0540"
  ]
}

CVE-2026-0540 (GCVE-0-2026-0540)

Vulnerability from cvelistv5 – Published: 2026-03-03 17:26 – Updated: 2026-03-25 15:52 X_Open Source

Title

DOMPurify XSS via Missing Rawtext Elements in SAFE_FOR_XML

Summary

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 </noscript><img src=x onerror=alert(1)> in attribute values to execute JavaScript when sanitized output is placed inside these unprotected rawtext contexts.

Severity

5.3 (Medium)


                        
                          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

6.1 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Assigner

VulnCheck

References

5 references

URL	Tags
https://github.com/cure53/DOMPurify	product
https://github.com/cure53/DOMPurify/commit/302b51…	patch
https://github.com/cure53/DOMPurify/releases/tag/3.3.2	release-notes
https://fluidattacks.com/advisories/daft	third-party-advisory
https://www.vulncheck.com/advisories/dompurify-xs…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
cure53	DOMPurify	Affected: 3.1.3 , ≤ 3.3.1 (semver) Affected: 2.5.3 , ≤ 2.5.8 (semver)

Date Public

2026-03-24 14:30

Credits

Camilo Vera - Fluid Attacks Cristian Vargas - Fluid Attacks Scott Moore - VulnCheck

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-0540",
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-03T19:01:28.294008Z",
                "version": "2.0.3"
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        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    "cna": {
      "affected": [
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          "vendor": "cure53",
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            },
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              "lessThanOrEqual": "2.5.8",
              "status": "affected",
              "version": "2.5.3",
              "versionType": "semver"
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      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
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                  "versionStartIncluding": "3.1.3",
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                },
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    "datePublished": "2026-03-03T17:26:06.621Z",
    "dateReserved": "2025-12-27T01:44:44.145Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

ubuntu-cve-2026-0540

Vulnerability from osv_ubuntu

CVE-2026-0540 (GCVE-0-2026-0540)

Tags

Sightings

Nomenclature