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TI-2021-02353 Aliases CVE-2021-3374GHSA-5c9r-9v3g-ggvp

Directory traversal in RStudio Shiny Server before 1.5.16 allows attackers to read the…

Priority MEDIUM 40CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.

Summary

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

Why it matters now

EPSS 0.14808 96th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:rstudio:shiny_server:*:*:*:*:pro:*:*:*before 1.5.16VulnerableRstudio
  • cpe:2.3:a:rstudio:shiny_server:*:*:*:*:pro:*:*:* Versions before 1.5.16 Vulnerable ·Rstudio

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-3374
  2. 2026-10-03 Alias added: GHSA-5c9r-9v3g-ggvp
  3. 2026-10-28 Priority changed: LOW → MEDIUM

References

Exploit 1

Advisory 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences