CVE-2026-40903 | Goshs - ArtiPACKED Vulnerability – GitHub Actions Credential Persistence

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.

Published: 2026-04-21 Last update: 2026-05-01 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-40903 is rated Low Risk (39.5/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.03%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-40903

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-22 — 0.03% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-40903

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 5.2 [email protected]

Weakness enumeration for CVE-2026-40903

Affected software / configurations for CVE-2026-40903

Vendor Product Version Raw CPE
goshs goshs < 2.0.0 cpe:2.3:a:goshs:goshs:*:*:*:*:*:go:*:*
goshs goshs 2.0.0 cpe:2.3:a:goshs:goshs:2.0.0:beta1:*:*:*:go:*:*
goshs goshs 2.0.0 cpe:2.3:a:goshs:goshs:2.0.0:beta2:*:*:*:go:*:*
goshs goshs 2.0.0 cpe:2.3:a:goshs:goshs:2.0.0:beta3:*:*:*:go:*:*
goshs goshs 2.0.0 cpe:2.3:a:goshs:goshs:2.0.0:beta4:*:*:*:go:*:*
goshs goshs 2.0.0 cpe:2.3:a:goshs:goshs:2.0.0:beta5:*:*:*:go:*:*

References for CVE-2026-40903

cvelogic Threat Intelligence