How severe is CVE-2026-53676?

CVE-2026-53676 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-53676 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-53676?

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-2026-53676 have an EU (EUVD) identifier?

Yes. CVE-2026-53676 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-37828.

When was CVE-2026-53676 published?

CVE-2026-53676 was published on 2026-06-17 and last updated on 2026-06-22.

CVE-2026-53676

CVE-2026-53676 is a high-severity vulnerability with a CVSS 3.x base score of 7.2. 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 7.2)
CVSS v4: 8.6
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-37828
Weakness: CWE-1321
Published: 2026-06-17
Last modified: 2026-06-22

Description

ThingsBoard contains a prototype pollution vulnerability which may lead to arbitrary code execution within a sandboxed context by a user who can log in to the affected product with the tenant administrator privilege (TENANT_ADMIN).

Frequently asked questions

What is CVE-2026-53676?: ThingsBoard contains a prototype pollution vulnerability which may lead to arbitrary code execution within a sandboxed context by a user who can log in to the affected product with the tenant administrator privilege (TENANT_ADMIN).
How severe is CVE-2026-53676?: CVE-2026-53676 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-53676 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-53676?: 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-2026-53676 have an EU (EUVD) identifier?: Yes. CVE-2026-53676 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-37828.
When was CVE-2026-53676 published?: CVE-2026-53676 was published on 2026-06-17 and last updated on 2026-06-22.

References

Other CWE-1321 (Prototype Pollution) vulnerabilities

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CVE-2020-12079 — Critical (CVSS 10.0): Beaker before 0.8.9 allows a sandbox escape, enabling system access and code execution. This occurs because Electron…

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