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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWpxNHYtZjVxNi1tanFx
lxml vulnerable to Cross-Site Scripting
An XSS vulnerability was discovered in the python lxml clean module versions before 4.6.3. When disabling the safe_attrs_only and forms arguments, the Cleaner class does not remove the formaction attribute allowing for JS to bypass the sanitizer. A remote attacker could exploit this flaw to run arbitrary JS code on users who interact with incorrectly sanitized HTML. This issue is patched in lxml 4.6.3.
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWpxNHYtZjVxNi1tanFx
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 3 years ago
Updated: 8 months ago
CVSS Score: 6.1
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Identifiers: GHSA-jq4v-f5q6-mjqq, CVE-2021-28957
References:
- https://nvd.nist.gov/vuln/detail/CVE-2021-28957
- https://github.com/lxml/lxml/pull/316
- https://github.com/lxml/lxml/pull/316/commits/10ec1b4e9f93713513a3264ed6158af22492f270
- https://github.com/lxml/lxml/commit/2d01a1ba8984e0483ce6619b972832377f208a0d
- https://bugs.launchpad.net/lxml/+bug/1888153
- https://pypi.org/project/lxml
- https://lists.debian.org/debian-lts-announce/2021/03/msg00031.html
- https://github.com/lxml/lxml/commit/a5f9cb52079dc57477c460dbe6ba0f775e14a999
- https://www.debian.org/security/2021/dsa-4880
- https://security.netapp.com/advisory/ntap-20210521-0004/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/3C2R44VDUY7FJVMAVRZ2WY7XYL4SVN45/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/XXN3QPWCTQVOGW4BMWV3AUUZZ4NRZNSQ/
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://security.gentoo.org/glsa/202208-06
- https://github.com/advisories/GHSA-jq4v-f5q6-mjqq
Blast Radius: 30.9
Affected Packages
pypi:lxml
Dependent packages: 3,046Dependent repositories: 115,734
Downloads: 86,331,857 last month
Affected Version Ranges: < 4.6.3
Fixed in: 4.6.3
All affected versions: 0.9.1, 0.9.2, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.1.1, 1.1.2, 1.2.1, 1.3.1, 1.3.2, 1.3.3, 1.3.4, 1.3.5, 1.3.6, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.0.7, 2.0.8, 2.0.9, 2.0.10, 2.0.11, 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.1.5, 2.2.1, 2.2.2, 2.2.3, 2.2.4, 2.2.5, 2.2.6, 2.2.7, 2.2.8, 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.3.6, 3.0.1, 3.0.2, 3.1.0, 3.1.1, 3.1.2, 3.2.0, 3.2.1, 3.2.2, 3.2.3, 3.2.4, 3.2.5, 3.3.0, 3.3.1, 3.3.2, 3.3.3, 3.3.4, 3.3.5, 3.3.6, 3.4.0, 3.4.1, 3.4.2, 3.4.3, 3.4.4, 3.5.0, 3.6.0, 3.6.1, 3.6.2, 3.6.3, 3.6.4, 3.7.0, 3.7.1, 3.7.2, 3.7.3, 3.8.0, 4.0.0, 4.1.0, 4.1.1, 4.2.0, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.6, 4.3.0, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.5, 4.4.0, 4.4.1, 4.4.2, 4.4.3, 4.5.0, 4.5.1, 4.5.2, 4.6.0, 4.6.1, 4.6.2
All unaffected versions: 4.6.3, 4.6.4, 4.6.5, 4.7.0, 4.7.1, 4.8.0, 4.9.0, 4.9.1, 4.9.2, 4.9.3, 4.9.4, 5.0.0, 5.0.1, 5.0.2, 5.1.0, 5.1.1, 5.2.0, 5.2.1