Low 2.1Published Mar 7, 2026

CVE-2026-30830Defuddle: XSS via unescaped string interpolation in _findContentBySchemaText image tag

Updated under an hour ago (Oct 26, 2026, 8:10 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for kepano defuddle

Exploited in the last 30 days

Defuddle cleans up HTML pages. Prior to version 0.9.0, the _findContentBySchemaText method in src/defuddle.ts interpolates image src and alt attributes directly into an HTML string without escaping. An attacker can use a " in the alt attribute to break out of the attribute context and inject event handler. This issue has been patched in version 0.9.0.

CVSS: 2.1 LOW (v4.0, CNA)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/E:P
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

kepano defuddle kepano:defuddle (from the name)	before 0.9.0	CNA record
kepano defuddle kepano:defuddle	before 0.9.0	NVD

References

References

https://github.com/kepano/defuddle/security/advisories/GHSA-5mq8-78gm-pjmq	x-refsource-confirm, exploit, mitigation, vendor-advisory
https://github.com/kepano/defuddle/commit/f154cb740ee603431b69638273af737a27156df9	x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.