Time discrepancy in authentication responses in OpenSearch
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-208.
Summary
OpenSearch Security is a plugin for OpenSearch that offers encryption, authentication and authorization. There is an observable discrepancy in the authentication response time between calls where the user provided exists and calls where it does not. This issue only affects calls using the internal basic identity provider (IdP), and not other externally configured IdPs. Patches were released in versions 1.3.9 and 2.6.0, there are no workarounds.
Why it matters now
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 |
|---|---|---|---|---|---|
| AWS | security | before 1.3.9; 2.0.0 to before 2.6.0 | 1.3.9, 2.6.0 | Patch available | CNA |
| — | org.opensearch.plugin:opensearch-security (Maven) | before 1.3.9 | 1.3.9 | Patch available | GHSA-c6wg-cm5x-rqvj |
| — | org.opensearch.plugin:opensearch-security (Maven) | 2.0.0 to before 2.6.0 | 2.6.0 | Patch available | GHSA-c6wg-cm5x-rqvj |
- security VendorAWS Affected before 1.3.9; 2.0.0 to before 2.6.0 Fixed in 1.3.9, 2.6.0 Patch available CNA
- org.opensearch.plugin:opensearch-security (Maven) Vendor— Affected before 1.3.9 Fixed in 1.3.9 Patch available GHSA-c6wg-cm5x-rqvj
- org.opensearch.plugin:opensearch-security (Maven) Vendor— Affected 2.0.0 to before 2.6.0 Fixed in 2.6.0 Patch available GHSA-c6wg-cm5x-rqvj
Remediation
- Fix · CNA security (opensearch-project) Fixed in 1.3.9, 2.6.0
- Fix · GHSA-c6wg-cm5x-rqvj org.opensearch.plugin:opensearch-security (Maven) Fixed in 1.3.9 Advisory →
- Fix · GHSA-c6wg-cm5x-rqvj org.opensearch.plugin:opensearch-security (Maven) Fixed in 2.6.0 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2023-25806
- 2026-10-03 Alias added: GHSA-c6wg-cm5x-rqvj
References
More AWS Opensearch vulnerabilities
- TI-2022-13159 Unsafe YAML deserialization in opensearch-ruby CVSS 3.1HIGH 8.8
- TI-2025-08817 OpenSearch 3.2.0 - Nested Boolean/Disjunction asymmetric DoS CVSS 4.0HIGH 8.3
- TI-2022-16405 OpenSearch vulnerable to Improper Authorization of Index Containing Sensitive Information CVSS 3.1HIGH 7.5
- TI-2023-09441 Issue with whitespace in JWT roles in OpenSearch CVSS 3.1HIGH 8.8
- TI-2023-09442 Field-level security issue with .keyword fields in OpenSearch CVSS 3.1MEDIUM 6.5
- TI-2022-20259 Issue with fine-grained access control of indices backing data streams CVSS 3.1MEDIUM 6.3
Sources
- CVE-2023-25806 · CVE Program
- CVE-2023-25806 · NVD
- FIRST EPSS
- GHSA-c6wg-cm5x-rqvj · GitHub Advisory Database · CC BY 4.0
- CVE-2023-25806 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences