CVE-2020-11888
MEDIUM6.1EPSS 0.65%XSS in python-markdown2
Published: 4/22/2020Modified: 4/28/2026
Also known as:DEBIAN-CVE-2020-11888
Description
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 (3)
- Debian/python-markdown2from 0, < 2.3.9-1
- PyPI/markdown2from 0, < 2.3.9
- PyPI/markdown2from 0, < 2.3.9
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N |
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
References (14)
- ADVISORYhttps://github.com/advisories/GHSA-fv3h-8x5j-pvgq
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2020-11888
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2020-11888
- PATCHhttps://github.com/trentm/python-markdown2
- WEBhttp://lists.opensuse.org/opensuse-security-announce/2020-05/msg00031.html
- WEBhttp://lists.opensuse.org/opensuse-security-announce/2020-05/msg00035.html
- WEBhttps://github.com/pypa/advisory-database/tree/main/vulns/markdown2/PYSEC-2020-65.yaml
- WEBhttps://github.com/trentm/python-markdown2/issues/348
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/6XOAIRJJCZNJUALXDHSIGH5PS2H63A3J
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/6XOAIRJJCZNJUALXDHSIGH5PS2H63A3J/
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/AQLRBGRVRRZK7P5SFL2MNGXFX37YHJAV
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/AQLRBGRVRRZK7P5SFL2MNGXFX37YHJAV/
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/PN6QSHRFZXRQAYZJQ4MOW5MKIXBYOMED
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/PN6QSHRFZXRQAYZJQ4MOW5MKIXBYOMED/