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CVE-2019-1020001

23
FAUCET Score

CVE-2019-1020001 describes a path traversal vulnerability in YARD versions prior to 0.9.20, impacting the yardoc tool. This flaw allows an unauthenticated attacker to access arbitrary files on the system with high confidentiality impact, as indicated by its CVSS score of 7.5 (High). While the vulnerability is severe, there is currently no evidence of active exploitation, nor are there publicly available exploit modules in common frameworks like Metasploit or Nuclei, and it has received no community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.9.20CPE 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
2.33%
Probability of exploitation in next 30 days
EPSS Percentile
81.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0233 is in the 67th percentile among its peer group of 51,551 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 (2)

rubygemspatch availablevia ghsa
Product: yardFixed in: 0.9.20
github_advisoryworkaround availablevia nvd_reference
View patch

Vendor Advisories (2)

rubygemsGHSA-xfhh-rx56-rxcrhigh

Path Traversal vulnerability that affects yard

Jul 2, 2019
redhatCVE-2019-1020001Moderate

rubygem-yard: Arbitrary path traversal and file access in yard server

Jun 27, 2019

References

github.com / lsegal/yard/security/advisories/GHSA-xfhh-rx56-rxcr
MitigationThird Party Advisory
lists.debian.org / debian-lts-announce/2024/03/msg00006.html