CVE Explorer

CVE-2026-28350

lxml_html_clean is a project for HTML cleaning functionalities copied from `lxml.html.clean`. Prior to version 0.4.4, the <base> tag passes through the default Cleaner configuration. While page_structure=True removes html, head, and title tags, there is no specific handling for <base>, allowing an attacker to inject it and hijack relative links on the page. This issue has been patched in version 0.4.4.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d01e6e614abc0fe3a566f2fb05632436d847197960886ef8e88cc682d1bbfacd

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"lxml_html_clean","vendor":"fedora-python","versions":[{"status":"affected","version":"< 0.4.4"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:0d39cf1f9a1c185045e7495ce9b240bbf59989d3d943cf80927499a4073e88f3 · sha256:2f5d66f9a596aa34… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:0d39cf1f9a1c185045e7495ce9b240bbf59989d3d943cf80927499a4073e88f3 · sha256:2f5d66f9a596aa34… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-116","description":"CWE-116: Improper Encoding or Escaping of Output","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:0d39cf1f9a1c185045e7495ce9b240bbf59989d3d943cf80927499a4073e88f3 · sha256:2f5d66f9a596aa34… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/fedora-python/lxml_html_clean/commit/9c5612ca33b941eec4178abf8a5294b103403f34","tags":["x_refsource_MISC"],"url":"https://github.com/fedora-python/lxml_html_clean/commit/9c5612ca33b941eec4178abf8a5294b103403f34"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0d39cf1f9a1c185045e7495ce9b240bbf59989d3d943cf80927499a4073e88f3 · sha256:2f5d66f9a596aa34… · /containers/cna/references/1

{"name":"https://github.com/fedora-python/lxml_html_clean/security/advisories/GHSA-xvp8-3mhv-424c","tags":["x_refsource_CONFIRM"],"url":"https://github.com/fedora-python/lxml_html_clean/security/advisories/GHSA-xvp8-3mhv-424c"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0d39cf1f9a1c185045e7495ce9b240bbf59989d3d943cf80927499a4073e88f3 · sha256:2f5d66f9a596aa34… · /containers/cna/references/0

{"tags":["exploit"],"url":"https://github.com/fedora-python/lxml_html_clean/security/advisories/GHSA-xvp8-3mhv-424c"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0d39cf1f9a1c185045e7495ce9b240bbf59989d3d943cf80927499a4073e88f3 · sha256:2f5d66f9a596aa34… · /containers/adp/0/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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