Vulnerability · Published Apr 20, 2020 · Assigned by mitre
CVE-2020-11888
Medium 6.1
In plain English
A medium-severity security flaw in the python-markdown2 package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 80% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.1Medium
Exploit odds (30 days)1.9%top 19.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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 & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | python-markdown2 | 2.3.9-1 | DEBIAN-CVE-2020-11888 |
| Debian:13 | python-markdown2 | 2.3.9-1 | DEBIAN-CVE-2020-11888 |
| Debian:14 | python-markdown2 | 2.3.9-1 | DEBIAN-CVE-2020-11888 |
| PyPI | markdown2 | 2.3.9 | GHSA-fv3h-8x5j-pvgq |
| PyPI | markdown2 | 2.3.9 | PYSEC-2020-65 |
Affected products (as reported)
References
- https://github.com/trentm/python-markdown2/issues/348 x_refsource_MISC
- openSUSE-SU-2020:0651 vendor-advisory, x_refsource_SUSE
- openSUSE-SU-2020:0656 vendor-advisory, x_refsource_SUSE
- FEDORA-2020-5f8f90e69c vendor-advisory, x_refsource_FEDORA
- FEDORA-2020-3864f32b3d vendor-advisory, x_refsource_FEDORA
- FEDORA-2020-ab379d4b90 vendor-advisory, x_refsource_FEDORA