CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NCVE-2021-40978
High (7.5) in mkdocs mkdocs. EPSS 15% chance of exploitation in the next 30 days. Fixed in mkdocs 1.2.3.
The mkdocs 1.2.2 built-in dev-server allows directory traversal using the port 8000, enabling remote exploitation to obtain :sensitive information. NOTE: the vendor has disputed this as described in https://github.com/mkdocs/mkdocs/issues/2601.] and https://github.com/nisdn/CVE-2021-40978/issues/1
Severity
- EPSS
- 15% chance of exploitation in the next 30 days; higher than 96% of CVEs (scores of 2026-10-31)
- CWE
- CWE-22
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mkdocs:mkdocs
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-qh9q-34h6-hcv9 | PyPI | mkdocs | >=1.2.2 <1.2.3 | 1.2.3 |
| PYSEC-2021-878 | PyPI | mkdocs | >=1.2.2 <1.2.3 | 1.2.3 |