How severe is CVE-2026-46393?

CVE-2026-46393 has a CVSS 4.0 base score of 7.1, rated high severity.

Is CVE-2026-46393 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-46393?

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

Does CVE-2026-46393 have an EU (EUVD) identifier?

Yes. CVE-2026-46393 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34884.

When was CVE-2026-46393 published?

CVE-2026-46393 was published on 2026-06-05 and last updated on 2026-06-17.

CVE-2026-46393

CVE-2026-46393 is a high-severity vulnerability with a CVSS 4.0 base score of 7.1. 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-918.

Key facts

Severity: High (CVSS 4.0 base score 7.1)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34884
Weakness: CWE-918
Published: 2026-06-05
Last modified: 2026-06-17

Description

HAX CMS helps manage microsite universe with PHP or NodeJs backends. An authenticated Server-Side Request Forgery (SSRF) vulnerability in versions prior to 26.0.0 allows authenticated users to fetch arbitrary internal or local resources and write the responses to a web-accessible directory, enabling arbitrary file read and internal network access. Version 26.0.0 contains a fix.

Frequently asked questions

What is CVE-2026-46393?: HAX CMS helps manage microsite universe with PHP or NodeJs backends. An authenticated Server-Side Request Forgery (SSRF) vulnerability in versions prior to 26.0.0 allows authenticated users to fetch arbitrary internal or local resources and write the responses to a web-accessible directory, enabling arbitrary file read and internal network access. Version 26.0.0 contains a fix.
How severe is CVE-2026-46393?: CVE-2026-46393 has a CVSS 4.0 base score of 7.1, rated high severity.
Is CVE-2026-46393 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-46393?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-46393 have an EU (EUVD) identifier?: Yes. CVE-2026-46393 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34884.
When was CVE-2026-46393 published?: CVE-2026-46393 was published on 2026-06-05 and last updated on 2026-06-17.

References

https://github.com/haxtheweb/issues/security/advisories/GHSA-q862-gcgq-5m6g

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