How severe is CVE-2026-40945?

CVE-2026-40945 has a CVSS 4.0 base score of 8.7, rated high severity.

Is CVE-2026-40945 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-2026-40945?

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-2026-40945 have an EU (EUVD) identifier?

Yes. CVE-2026-40945 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24511.

When was CVE-2026-40945 published?

CVE-2026-40945 was published on 2026-04-21 and last updated on 2026-06-17.

CVE-2026-40945

CVE-2026-40945 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. 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-532.

Key facts

Severity: High (CVSS 4.0 base score 8.7)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-24511
Weakness: CWE-532
Published: 2026-04-21
Last modified: 2026-06-17

Description

Oxia is a metadata store and coordination system. Prior to 0.16.2, when OIDC authentication fails, the full bearer token is logged at DEBUG level in plaintext. If debug logging is enabled in production, JWT tokens are exposed in application logs and any connected log aggregation system. This vulnerability is fixed in 0.16.2.

Frequently asked questions

What is CVE-2026-40945?: Oxia is a metadata store and coordination system. Prior to 0.16.2, when OIDC authentication fails, the full bearer token is logged at DEBUG level in plaintext. If debug logging is enabled in production, JWT tokens are exposed in application logs and any connected log aggregation system. This vulnerability is fixed in 0.16.2.
How severe is CVE-2026-40945?: CVE-2026-40945 has a CVSS 4.0 base score of 8.7, rated high severity.
Is CVE-2026-40945 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-2026-40945?: 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-2026-40945 have an EU (EUVD) identifier?: Yes. CVE-2026-40945 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24511.
When was CVE-2026-40945 published?: CVE-2026-40945 was published on 2026-04-21 and last updated on 2026-06-17.

References

https://github.com/oxia-db/oxia/security/advisories/GHSA-pm7q-rjjx-979p

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