How severe is CVE-2026-46509?

CVE-2026-46509 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.

Is CVE-2026-46509 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-2026-46509?

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-2026-46509 have an EU (EUVD) identifier?

Yes. CVE-2026-46509 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32976.

When was CVE-2026-46509 published?

CVE-2026-46509 was published on 2026-05-28 and last updated on 2026-06-17.

CVE-2026-46509

CVE-2026-46509 is a high-severity vulnerability with a CVSS 3.x base score of 8.2. 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-1321.

Key facts

Severity: High (CVSS 3.x base score 8.2)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-32976
Weakness: CWE-1321
Published: 2026-05-28
Last modified: 2026-06-17

Description

deepobj provides get, set, delete deep objects in javascript. Prior to 1.0.3, prototype pollution is possible when property paths contain __proto__/constructor/prototype. The property path must not be exposed as user input. This vulnerability is fixed in 1.0.3.

Frequently asked questions

What is CVE-2026-46509?: deepobj provides get, set, delete deep objects in javascript. Prior to 1.0.3, prototype pollution is possible when property paths contain __proto__/constructor/prototype. The property path must not be exposed as user input. This vulnerability is fixed in 1.0.3.
How severe is CVE-2026-46509?: CVE-2026-46509 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.
Is CVE-2026-46509 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-2026-46509?: 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-2026-46509 have an EU (EUVD) identifier?: Yes. CVE-2026-46509 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32976.
When was CVE-2026-46509 published?: CVE-2026-46509 was published on 2026-05-28 and last updated on 2026-06-17.

References

https://github.com/ranfdev/deepobj/security/advisories/GHSA-x7q7-fchv-8h2j

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