WS-2022-0122
Published:May 15, 2026
Updated:May 15, 2026
xml2rfc allows "script" elements in SVG sources. In HTML output having these script elements can lead to XSS attacks. Sample XML snippet: <artwork type="svg" src="data:image/svg+xml,%3Csvg viewBox='0 0 10 10' xmlns='http://www.w3.org/2000/svg'%3E%3Cscript%3E window.alert('Test Alert'); %3C/script%3E%3C/svg%3E"> </artwork> Impact This vulnerability impacts website that publish HTML drafts and RFCs. Patches This has been fixed in version "3.12.4" (https://github.com/ietf-tools/xml2rfc/releases/tag/v3.12.4). Workarounds If SVG source is self-contained within the XML, scraping "script" elements from SVG files. References * https://developer.mozilla.org/en-US/docs/Web/SVG/Element/script For more information If you have any questions or comments about this advisory: * Open an issue in "xml2rfc" (https://github.com/ietf-tools/xml2rfc/) * Email us at "operational-vulnerability@ietf.org" (mailto:operational-vulnerability@ietf.org) * "Infrastructure and Services Vulnerability Disclosure" (https://www.ietf.org/about/administration/policies-procedures/vulnerability-disclosure/)
Related Resources (3)
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Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')