How severe is CVE-2026-35392?

CVE-2026-35392 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-35392 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35392?

CVE-2026-35392 primarily affects Goshs. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-35392?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-35392 have an EU (EUVD) identifier?

Yes. CVE-2026-35392 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19488.

When was CVE-2026-35392 published?

CVE-2026-35392 was published on 2026-04-06 and last updated on 2026-07-24.

CVE-2026-35392

CVE-2026-35392 is a critical-severity vulnerability in Goshs with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19488
Weakness: CWE-22
Affected product: Goshs
Published: 2026-04-06
Last modified: 2026-07-24

Description

goshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.3, PUT upload in httpserver/updown.go has no path sanitization. This vulnerability is fixed in 2.0.0-beta.3.

Frequently asked questions

What is CVE-2026-35392?: goshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.3, PUT upload in httpserver/updown.go has no path sanitization. This vulnerability is fixed in 2.0.0-beta.3.
How severe is CVE-2026-35392?: CVE-2026-35392 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-35392 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35392?: CVE-2026-35392 primarily affects Goshs. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-35392?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-35392 have an EU (EUVD) identifier?: Yes. CVE-2026-35392 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19488.
When was CVE-2026-35392 published?: CVE-2026-35392 was published on 2026-04-06 and last updated on 2026-07-24.

References

https://github.com/patrickhener/goshs/security/advisories/GHSA-g8mv-vp7j-qp64

Affected products (3)

cpe:2.3:a:goshs:goshs:*:*:*:*:*:go:*:*
cpe:2.3:a:goshs:goshs:2.0.0:beta1:*:*:*:go:*:*
cpe:2.3:a:goshs:goshs:2.0.0:beta2:*:*:*:go:*:*

More vulnerabilities in Goshs

CVE-2026-40884 — Critical (CVSS 9.8): goshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.6, goshs contains an SFTP authentication bypass when the…
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