CVE-2017-10974

HIGH EXPLOITED NUCLEI

Yaws 1.91 - Unauthenticated Path Traversal via HTTP Directory Traversal with /%5C../

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2017-10974 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 1 public exploit from researchers including hyp3rlinx. A Nuclei detection template is also available.

AI-analyzed exploit summary This exploit demonstrates an unauthenticated directory traversal vulnerability in Yaws web server v1.91, allowing remote attackers to read sensitive files such as SSL private keys and access logs via crafted HTTP requests.

Description

Yaws 1.91 allows Unauthenticated Remote File Disclosure via HTTP Directory Traversal with /%5C../ to port 8080. NOTE: this CVE is only about use of an initial /%5C sequence to defeat traversal protection mechanisms; the initial /%5C sequence was apparently not discussed in earlier research on this product.

Exploits (1)

exploitdb WORKING POC
by hyp3rlinx · textremotemultiple
https://www.exploit-db.com/exploits/42303

This exploit demonstrates an unauthenticated directory traversal vulnerability in Yaws web server v1.91, allowing remote attackers to read sensitive files such as SSL private keys and access logs via crafted HTTP requests.

Classification
Working Poc 100%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Yaws web server v1.91
No auth needed
Prerequisites: network access to the Yaws web server
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

Yaws 1.91 - Local File Inclusion
HIGHby 0x_Akoko

References (3)

Core 3
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/99515
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/42303/

Scores

CVSS v3 7.5
EPSS 0.8103
EPSS Percentile 99.6%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

VulnCheck KEV 2024-01-03
CWE
CWE-22
Status published
Products (1)
yaws/yaws 1.91
Published Jul 07, 2017
Tracked Since Feb 18, 2026