CVE-2026-40903

Name: CVE-2026-40903
Creator: NVD / NIST
Published: 2026-04-21T20:17:02.947+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.24%

Last modified Jun 17, 2026

CVE-2026-40903 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. goshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.6, goshs has an ArtiPACKED vulnerability. EPSS estimates a 0.24% chance of exploitation in the next 30 days.

Description

goshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.6, goshs has an ArtiPACKED vulnerability. ArtiPACKED can lead to leakage of the GITHUB_TOKEN through workflow artifacts, even though the token is not present in the repository source code. This vulnerability is fixed in 2.0.0-beta.6.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

0.24%

15.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-829

Affected Software

Vendor	Product	Versions	Update
Goshs	Goshs	< 2.0.0	—
Goshs	Goshs	2.0.0	Beta1

References

https://github.com/patrickhener/goshs/security/advisories/GHSA-hpxj-9fgp-fhhfVendor Advisory

Timeline

Published: Apr 21, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-40903?

How severe is CVE-2026-40903?

CVE-2026-40903 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.

How do I fix CVE-2026-40903?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-40903?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST