CVE-2026-40883 json
goshs: CSRF in state-changing GET routes enables authenticated file deletion and directory creation
published 2026-04-14 6 mo ago modified 2026-10-26 14 d ago also GHSA-jrq5-hg6x-j6g3 , GO-2026-5479 , EUVD-2026-24270
- cvss
- 8.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 3%
- public exploits
- 0
- none known
Summary
goshs is a SimpleHTTPServer written in Go. From 2.0.0-beta.4 to 2.0.0-beta.5, goshs contains a cross-site request forgery issue in its state-changing HTTP GET routes. An external attacker can cause an already authenticated browser to trigger destructive actions such as ?delete and ?mkdir because goshs relies on HTTP basic auth alone and performs no CSRF, Origin, or Referer validation for those routes. This vulnerability is fixed in 2.0.0-beta.6.
Patch / fix
- go github.com/patrickhener/goshs/v2 2.0.0-beta.6
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 6 mo ago
Exploit prediction
0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/patrickhener/goshs/security/advisories/GHSA-jrq5-hg6x-j6g3 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.1 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 4.0 | 6.1 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H |
| GitHub | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/patrickhener/goshs/v2 | >=2.0.0-beta.4, <2.0.0-beta.6 |
2.0.0-beta.6 |
| go | github.com/patrickhener/goshs | all versions |
no fix listed |
Affected products
- patrickhener goshs
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
References
-
github.com
/patrickhener/goshs/security/advisories/GHSA-jrq5-hg6x-j6g3
exploit, web, vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-40883
advisory
-
github.com
/patrickhener/goshs
package
Sources
- CVE List CVE-2026-40883
- GitHub Advisory GHSA-jrq5-hg6x-j6g3
- NVD CVE-2026-40883
- OSV GO-2026-5479
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