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CVE-2017-17042

25
FAUCET Score

CVE-2017-17042 describes a directory traversal vulnerability in YARD before version 0.9.11, specifically within the lib/yard/core_ext/file.rb component of its server. This flaw allows unauthenticated attackers to read arbitrary files on the system by using relative paths with "../" sequences. The vulnerability carries a high CVSS score of 7.5, indicating a severe impact on confidentiality with low attack complexity. Despite its severity, there is no evidence of active exploitation, readily available exploit code in common repositories like Metasploit or ExploitDB, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.9.11CPE matchmatch criteria
cpe:2.3:a:yardoc:yard:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.89%
Probability of exploitation in next 30 days
EPSS Percentile
85.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0289 is in the 74th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

github_advisorypatch availablevia nvd_reference
View patch
rubygemspatch availablevia ghsa
Product: yardFixed in: 0.9.11
redhatend of lifevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: rubygem-yard
redhatend of lifevia redhat_api
Product: Red Hat Subscription Asset ManagerFixed in: rubygem-yard

Vendor Advisories (2)

rubygemsGHSA-gj4p-3wh3-2rmfhigh

Arbitrary file read vulnerability in yard server

Dec 21, 2017
redhatCVE-2017-17042Moderate

rubygem-yard: (lib/yard/core_ext/file.rb) is vulnerable to directory traversal attacks

Nov 24, 2017

References

github.com / lsegal/yard/commit/b0217b3e30dc53d057b1682506333335975e62b4
Patch