CVE-2026-66064goshs has ACL Bypass & Path Traversal
- 5.3MediumCVSS base score
- 0.45%Exploitation in 30 daysEPSS · top 61% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
goshs is a feature-rich single-binary file server for red teamers and developers. Prior to 2.1.5, the httpserver/handler.go sendFile handler opened files using a cleaned path but derived the authorization filename from raw req.URL.Path, so a trailing slash could bypass .goshs ACL-file protection and block-list checks. This issue is fixed in version 2.1.5.
Timeline
ID reserved
By GitHub_M
- 5 days later
· 5 days later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVDNVD · Deferred | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.45% · top 61% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Affected products
- affected < 2.1.5
Affected packages
Affected packages4
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/patrickhener/goshsGHSA-964w-f6gj-5236 (opens in a new tab)
- Gogithub.com/patrickhener/goshs/v2GHSA-964w-f6gj-5236 (opens in a new tab)
- Gogoshs.de/goshsGHSA-964w-f6gj-5236 (opens in a new tab)
- Gogoshs.de/goshs/v2GHSA-964w-f6gj-5236 (opens in a new tab)
References
References3
- https://github.com/goshs-labs/goshs/security/advisories/GHSA-964w-f6gj-5236 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/goshs-labs/goshs/pull/222 (opens in a new tab)x_refsource_MISC
- https://github.com/goshs-labs/goshs/commit/f3ef599e409151d1380866e47de8b1afb0bb54fa (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-50083 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-964w-f6gj-5236 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-66064)Record last updated .