CVE-2026-40969
CVE-2026-40969 is a low-severity vulnerability in Vmware Spring Grpc with a CVSS 3.x base score of 3.7. 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-209.
Key facts
- Severity: Low (CVSS 3.x base score 3.7)
- EPSS exploit prediction: 0% (10th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-26064
- Weakness: CWE-209
- Affected product: Vmware Spring Grpc
- Published:
- Last modified:
Description
The raw message of every server-side AuthenticationException is returned to the unauthenticated remote caller in the gRPC status description. This allows an attacker to obtain information about the authentication failure, which may be useful for further attacks. Affected versions: Spring gRPC: 1.0.0 - 1.0.2 (fixed in 1.0.3). Older, unsupported versions are also affected.
Frequently asked questions
- What is CVE-2026-40969?
- The raw message of every server-side AuthenticationException is returned to the unauthenticated remote caller in the gRPC status description. This allows an attacker to obtain information about the authentication failure, which may be useful for further attacks. Affected versions: Spring gRPC: 1.0.0 - 1.0.2 (fixed in 1.0.3). Older, unsupported versions are also affected.
- How severe is CVE-2026-40969?
- CVE-2026-40969 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
- Is CVE-2026-40969 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-40969?
- CVE-2026-40969 affects Vmware Spring Grpc. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-40969?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-40969 have an EU (EUVD) identifier?
- Yes. CVE-2026-40969 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26064.
- When was CVE-2026-40969 published?
- CVE-2026-40969 was published on 2026-04-28 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:vmware:spring_grpc:*:*:*:*:*:*:*:*
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