CVE-2021-3374

moderate-risk
Published 2021-04-02

Directory traversal in RStudio Shiny Server before 1.5.16 allows attackers to read the application source code, involving an encoded slash.

Do I need to act?

!
83.3% chance of exploitation in next 30 days
EPSS score — higher than 17% 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
5
CVSS 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Rstudio

References (4)

Vendor Advisory https://blog.rstudio.com/2021/01/13/shiny-server-1-5-16-update/
Exploit https://github.com/colemanjp/shinyserver-directory-traversal-source-code-leak
Vendor Advisory https://blog.rstudio.com/2021/01/13/shiny-server-1-5-16-update/
Exploit https://github.com/colemanjp/shinyserver-directory-traversal-source-code-leak
46
/ 100
moderate-risk
Severity 21/34 · High
Exploitability 20/34 · Moderate
Exposure 5/34 · Minimal