GHSA-3jfp-46x4-xgfj

Suggest an improvement
Source
https://github.com/advisories/GHSA-3jfp-46x4-xgfj
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-3jfp-46x4-xgfj/GHSA-3jfp-46x4-xgfj.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-3jfp-46x4-xgfj
Aliases
  • CVE-2026-41493
Published
2026-04-17T22:21:03Z
Modified
2026-04-27T16:34:06Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
yard: Possible arbitrary path traversal and file access via yard server
Details

Impact

A path traversal vulnerability was discovered in YARD <= 0.9.41 when using yard server to serve documentation. This bug would allow unsanitized HTTP requests to access arbitrary files on the machine of a yard server host under certain conditions.

The original patch in GHSA-xfhh-rx56-rxcr was incorrectly applied.

Patches

Please upgrade to YARD v0.9.42 immediately if you are relying on yard server to host documentation in any untrusted environments without WEBrick and rely on --docroot.

Workarounds

For users who cannot upgrade, it is possible to perform path sanitization of HTTP requests at your webserver level. WEBrick, for example, can perform such sanitization by default (which you can use via yard server -s webrick), as can certain rules in your webserver configuration.

Database specific 
{
    "nvd_published_at": null,
    "severity": "MODERATE",
    "github_reviewed_at": "2026-04-17T22:21:03Z",
    "cwe_ids": [
        "CWE-22"
    ],
    "github_reviewed": true
}
References

Affected packages

RubyGems / yard

Package

Name
yard
Purl
pkg:gem/yard

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.9.42

Affected versions

0.*
0.2.0
0.2.1
0.2.2
0.2.3
0.2.3.2
0.2.3.3
0.2.3.4
0.2.3.5
0.4.0
0.5.0
0.5.1p1
0.5.1
0.5.2
0.5.3
0.5.4
0.5.5
0.5.6
0.5.7
0.5.8
0.6.0
0.6.1
0.6.2
0.6.3
0.6.4
0.6.5
0.6.6
0.6.7
0.6.8
0.7.0
0.7.1
0.7.2
0.7.3
0.7.4
0.7.5
0.8.0
0.8.1
0.8.2
0.8.2.1
0.8.3
0.8.4
0.8.4.1
0.8.5
0.8.5.1
0.8.5.2
0.8.6
0.8.6.1
0.8.6.2
0.8.7
0.8.7.1
0.8.7.2
0.8.7.3
0.8.7.4
0.8.7.5
0.8.7.6
0.9.0
0.9.1
0.9.2
0.9.3
0.9.4
0.9.5
0.9.6
0.9.7
0.9.8
0.9.9
0.9.10
0.9.11
0.9.12
0.9.13
0.9.14
0.9.15
0.9.16
0.9.17
0.9.18
0.9.19
0.9.20
0.9.21
0.9.22
0.9.23
0.9.24
0.9.25
0.9.26
0.9.27
0.9.28
0.9.29
0.9.30
0.9.31
0.9.32
0.9.33
0.9.34
0.9.35
0.9.36
0.9.37
0.9.38
0.9.39
0.9.40
0.9.41

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-3jfp-46x4-xgfj/GHSA-3jfp-46x4-xgfj.json"