CVE-2026-42073
Description
OpenClaude is an open-source coding-agent command line interface for cloud and local model providers. Prior to version 0.5.1, the OpenClaude MCP authentication flow starts a temporary local HTTP server to handle OAuth callbacks. To prevent CSRF attacks, the server validates a state parameter against an internally stored value. However, due to a logic flaw in the order of conditionals, an attacker can completely bypass this check and force the server to shut down — without knowing the state value at all. This issue has been patched in version 0.5.1.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| npm | @gitlawb/openclaude | <0.5.1 | 0.5.1 |
| NPM | @gitlawb/openclaude | < 0.5.1 | 0.5.1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| gitlawb | openclaude | {"endExcluding":"0.5.1"} | 0.5.1 |
References
- https://github.com/Gitlawb/openclaude/security/advisories/GHSA-c73c-x77g-854r
- https://github.com/Gitlawb/openclaude/commit/739b8d1f40fde0e401a5cbd2b9a55d88bd5124ad
- https://github.com/Gitlawb/openclaude
- https://github.com/Gitlawb/openclaude/releases/tag/v0.5.1
- https://github.com/advisories/GHSA-c73c-x77g-854r
CWEs
CWE-352 CWE-400
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.