How severe is CVE-2026-46357?

CVE-2026-46357 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-46357 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-2026-46357?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-46357 have an EU (EUVD) identifier?

Yes. CVE-2026-46357 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34897.

When was CVE-2026-46357 published?

CVE-2026-46357 was published on 2026-06-05 and last updated on 2026-06-17.

CVE-2026-46357

CVE-2026-46357 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34897
Weakness: CWE-20
Published: 2026-06-05
Last modified: 2026-06-17

Description

HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0, the HAX CMS NodeJS application crashes when an authenticated attacker sends a specially crafted site creation request to the createSite endpoint. A single request is sufficient to take the entire application offline, requiring a manual server restart to restore service. Version 26.0.0 fixes the issue.

Frequently asked questions

What is CVE-2026-46357?: HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0, the HAX CMS NodeJS application crashes when an authenticated attacker sends a specially crafted site creation request to the createSite endpoint. A single request is sufficient to take the entire application offline, requiring a manual server restart to restore service. Version 26.0.0 fixes the issue.
How severe is CVE-2026-46357?: CVE-2026-46357 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-46357 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-2026-46357?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-46357 have an EU (EUVD) identifier?: Yes. CVE-2026-46357 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34897.
When was CVE-2026-46357 published?: CVE-2026-46357 was published on 2026-06-05 and last updated on 2026-06-17.

References

https://github.com/haxtheweb/issues/security/advisories/GHSA-9r33-xhw8-4qqp

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