CVE-2018-19787

unknown

Published 2022-05-13 · Modified 2023-11-08

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CVSS v3

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CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v4 NEW

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not yet in upstream

VIR risk

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Description

An issue was discovered in lxml before 4.2.5. lxml/html/clean.py in the lxml.html.clean module does not remove javascript: URLs that use escaping, allowing a remote attacker to conduct XSS attacks, as demonstrated by "j a v a s c r i p t:" in Internet Explorer. This is a similar issue to CVE-2014-3146.

Predictions

Exploit likelihood

30%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`4.2.5-1`
sid	Fixed	`4.2.5-1`
forky	Fixed	`4.2.5-1`
bullseye	Fixed	`4.2.5-1`
bookworm	Fixed	`4.2.5-1`

Package impact

Ecosystem	Package	Vulnerable	Fixed
PyPI	lxml	`<4.2.5`	`4.2.5`
PyPI	lxml	`<6be1d081b49c97cfd7b3fbd934a193b668629109\|\|<4.2.5`	`6be1d081b49c97cfd7b3fbd934a193b668629109`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.