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CVE-2026-30830

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ac79f0396ae57b02597e9c2b0413b34e7bed29a0460da469f6bfa53ab608769f
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"defuddle","vendor":"kepano","versions":[{"status":"affected","version":"< 0.9.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7c6c2ccd5dd69660fe9de98ad483ee23ecb995212186d43d05c41a423b770bbf · sha256:61d4ebee9135c072… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":2.1,"baseSeverity":"LOW","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7c6c2ccd5dd69660fe9de98ad483ee23ecb995212186d43d05c41a423b770bbf · sha256:61d4ebee9135c072… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7c6c2ccd5dd69660fe9de98ad483ee23ecb995212186d43d05c41a423b770bbf · sha256:61d4ebee9135c072… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/kepano/defuddle/commit/f154cb740ee603431b69638273af737a27156df9","tags":["x_refsource_MISC"],"url":"https://github.com/kepano/defuddle/commit/f154cb740ee603431b69638273af737a27156df9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7c6c2ccd5dd69660fe9de98ad483ee23ecb995212186d43d05c41a423b770bbf · sha256:61d4ebee9135c072… · /containers/cna/references/1
{"name":"https://github.com/kepano/defuddle/security/advisories/GHSA-5mq8-78gm-pjmq","tags":["x_refsource_CONFIRM"],"url":"https://github.com/kepano/defuddle/security/advisories/GHSA-5mq8-78gm-pjmq"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7c6c2ccd5dd69660fe9de98ad483ee23ecb995212186d43d05c41a423b770bbf · sha256:61d4ebee9135c072… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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