medium6.1
CVE-2020-11888
XSS in python-markdown2
Impact
python-markdown2 through 2.3.8 allows XSS because element names are mishandled unless a \w+ match succeeds. For example, an attack might use elementname@ or elementname- with an onclick attribute.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | markdown2 | <= 2.3.8 | 2.3.9 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Python-Markdown2 Project | Python-Markdown2 | through 2.3.8 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00031.html
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00035.html
- https://github.com/trentm/python-markdown2/issues/348
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XOAIRJJCZNJUALXDHSIGH5PS2H63A3J/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AQLRBGRVRRZK7P5SFL2MNGXFX37YHJAV/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PN6QSHRFZXRQAYZJQ4MOW5MKIXBYOMED/
- https://github.com/advisories/GHSA-fv3h-8x5j-pvgq
- https://nvd.nist.gov/vuln/detail/CVE-2020-11888
- https://github.com/pypa/advisory-database/tree/main/vulns/markdown2/PYSEC-2020-65.yaml
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6XOAIRJJCZNJUALXDHSIGH5PS2H63A3J
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AQLRBGRVRRZK7P5SFL2MNGXFX37YHJAV
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PN6QSHRFZXRQAYZJQ4MOW5MKIXBYOMED