CVE-2026-40969Spring gRPC AuthenticationException message reflected to remote client
Updated under an hour ago ()
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It affects Spring gRPC and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 3.7 LOW (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weakness (CWE)
- CWE-209
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- vmware
- NVD analysis
- Analyzed
- Record last updated
- Apr 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Spring Spring gRPC spring:grpc (from the name) | from 1.0.0 before 1.0.3 | CNA record |
vmware spring_grpc vmware:spring_grpc | before 1.0.3 | NVD |
References
- https://spring.io/security/cve-2026-40969vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.