Path Traversal Vulnerability in Caucho Resin Documentation Webapp
CVE-2017-20284

8.7HIGH

Key Information:

Vendor

Caucho Technology, Inc.

Status
Resin
Vendor
CVE Published:
18 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2017-20284?

Caucho Resin has a security flaw in its documentation webapp (resin-doc), which allows remote unauthenticated attackers to exploit path traversal techniques. By supplying a relative path via the inputFile request parameter in the jndi-appconfig tutorial servlet, attackers can gain access to arbitrary files located outside the designated tutorial directory on the server. This issue could potentially expose sensitive information, as evidenced by reports from the Shadowserver Foundation in December 2021.

Affected Version(s)

Resin *

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2017-20284 - Proof of Concept

References

https://raw.githubusercontent.com/projectdiscovery/nuclei...
technical-description
https://blkstone.github.io/2017/10/30/resin-attack-vectors/
exploit
https://caucho.com/products/resin
product

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Neurohazard
The Shadowserver Foundation
.