How severe is CVE-2026-9645?

CVE-2026-9645 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-9645 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-9645?

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-2026-9645 have an EU (EUVD) identifier?

Yes. CVE-2026-9645 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33028.

When was CVE-2026-9645 published?

CVE-2026-9645 was published on 2026-05-28 and last updated on 2026-06-17.

CVE-2026-9645

CVE-2026-9645 is a critical-severity vulnerability with a CVSS 3.x base score of 9.9. 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-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.9)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-33028
Weakness: CWE-78
Published: 2026-05-28
Last modified: 2026-06-17

Description

Exposed methods allow authenticated users to create and execute arbitrary JavaScript code on the server. The scripts execute with full access, enabling complete system compromise as commands are executed as root.

Frequently asked questions

What is CVE-2026-9645?: Exposed methods allow authenticated users to create and execute arbitrary JavaScript code on the server. The scripts execute with full access, enabling complete system compromise as commands are executed as root.
How severe is CVE-2026-9645?: CVE-2026-9645 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-9645 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-9645?: 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-2026-9645 have an EU (EUVD) identifier?: Yes. CVE-2026-9645 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33028.
When was CVE-2026-9645 published?: CVE-2026-9645 was published on 2026-05-28 and last updated on 2026-06-17.

References

https://www.tenable.com/security/research/tra-2026-46

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