PYSEC-2021-19
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/lxml/PYSEC-2021-19.yaml
- JSON Data
- https://api.osv.dev/v1/vulns/PYSEC-2021-19
- Aliases
- Published
- 2021-03-21T05:15:00Z
- Modified
- 2023-11-01T05:44:32.934521Z
- Summary
- [none]
- Details
-
An XSS vulnerability was discovered in python-lxml's clean module versions before 4.6.3. When disabling the safeattrsonly 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.
- References
-
- https://bugs.launchpad.net/lxml/+bug/1888153
- https://github.com/lxml/lxml/pull/316/commits/10ec1b4e9f93713513a3264ed6158af22492f270
- 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://github.com/advisories/GHSA-jq4v-f5q6-mjqq
Affected packages
PyPI / lxml
Package
- Name
- lxml
- View open source insights on deps.dev
- Purl
- pkg:pypi/lxml
Affected ranges
- Type
- GIT
- Repo
- https://github.com/lxml/lxml
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed4.6.3
Affected versions
0.*
0.9
0.9.1
0.9.2
1.*
1.0.beta
1.0
1.0.1
1.0.2
1.0.3
1.0.4
1.1alpha
1.1beta
1.1
1.1.1
1.1.2
1.2
1.2.1
1.3beta
1.3
1.3.1
1.3.2
1.3.3
1.3.4
1.3.5
1.3.6
2.*
2.0alpha1
2.0alpha2
2.0alpha3
2.0alpha4
2.0alpha5
2.0alpha6
2.0beta1
2.0beta2
2.0
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
2.1alpha1
2.1beta1
2.1beta2
2.1beta3
2.1
2.1.1
2.1.2
2.1.3
2.1.4
2.1.5
2.2alpha1
2.2beta1
2.2beta2
2.2beta3
2.2beta4
2.2
2.2.1
2.2.2
2.2.3
2.2.4
2.2.5
2.2.6
2.2.7
2.2.8
2.3alpha1
2.3alpha2
2.3beta1
2.3
2.3.1
2.3.2
2.3.3
2.3.4
2.3.5
2.3.6
3.*
3.0
3.0.1
3.0.2
3.1beta1
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
3.3.0beta1
3.3.0beta2
3.3.0beta3
3.3.0beta4
3.3.0beta5
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
3.5.0b1
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.*
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