CVE-2021-40978

high-risk
Published 2021-10-07

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

Do I need to act?

!
84.8% chance of exploitation in next 30 days
EPSS score — higher than 15% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Mkdocs

References (8)

Third Party Advisory https://github.com/mkdocs/mkdocs
Issue Tracking https://github.com/mkdocs/mkdocs/issues/2601
Exploit https://github.com/nisdn/CVE-2021-40978
Issue Tracking https://github.com/nisdn/CVE-2021-40978/issues/1
Third Party Advisory https://github.com/mkdocs/mkdocs
Issue Tracking https://github.com/mkdocs/mkdocs/issues/2601
Exploit https://github.com/nisdn/CVE-2021-40978
Issue Tracking https://github.com/nisdn/CVE-2021-40978/issues/1
51
/ 100
high-risk
Severity 26/34 · High
Exploitability 20/34 · Moderate
Exposure 5/34 · Minimal