CVE-2026-40944CWE-295

Oxia: TLS CA certificate chain validation fails with multi-certificate PEM bundles

Medium · published April 21, 2026

CVSS v4.0
6.9
EPSS
0%
Percentile
16.9
In the wild
Unconfirmed
What it is

Oxia is a metadata store and coordination system. Prior to 0.16.2, the trustedCertPool() function in the TLS configuration only parses the first PEM block from CA certificate files. When a CA bundle contains multiple certificates (e.g., intermediate + root CA), only the first certificate is loaded. This silently breaks certificate chain validation for mTLS. This vulnerability is fixed in 0.16.2.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
EPSS
0.00261 · 16.9th percentile
Weakness
CWE-295 · Improper Certificate Validation
Published
2026-04-21T21:14Z
EPSS history
Timeline
  • 21 APR 21:14Z
    Oxia: TLS CA certificate chain validation fails with multi-certificate PEM bundles
    cvelistv5