Oxia: TLS CA certificate chain validation fails with multi-certificate PEM bundles
Priority LOW 36CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-295.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0016 5th percentileScored 2026-11-07
Fix Fixed oxia (oxia-db): 0.16.2github.com/oxia-db/oxia (Go): 0.16.2
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| oxia-db | oxia | before 0.16.2 | 0.16.2 | Patch available | CNA |
| — | github.com/oxia-db/oxia (Go) | before 0.16.2 | 0.16.2 | Patch available | GHSA-7jrq-q4pq-rhm6 |
- oxia Vendoroxia-db Affected before 0.16.2 Fixed in 0.16.2 Patch available CNA
- github.com/oxia-db/oxia (Go) Vendor— Affected before 0.16.2 Fixed in 0.16.2 Patch available GHSA-7jrq-q4pq-rhm6
Remediation
- Fix · CNA oxia (oxia-db) Fixed in 0.16.2
- Fix · GHSA-7jrq-q4pq-rhm6 github.com/oxia-db/oxia (Go) Fixed in 0.16.2 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-40944
- 2026-10-03 Alias added: GHSA-7jrq-q4pq-rhm6
References
More oxia-db vulnerabilities
- TI-2026-29597 Oxia: OIDC token audience validation bypass via SkipClientIDCheck CVSS 4.0CRITICAL 9.2
- TI-2026-29596 Oxia: Bearer token exposed in debug log messages on authentication failure CVSS 4.0HIGH 8.7
- TI-2026-29594 Oxia: Server crash via race condition in session heartbeat handling CVSS 4.0HIGH 8.7
Sources
- CVE-2026-40944 · CVE Program
- CVE-2026-40944 · NVD
- FIRST EPSS
- GHSA-7jrq-q4pq-rhm6 · GitHub Advisory Database · CC BY 4.0
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