Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N L N R C H H N 9.3 .0013 3.0 —
AFFECTED Product Versions Fixed LibreChat < 0.8.5 – —
TIMELINE Jun 11 Reserved by GitHub_M Jun 25 EXPLOIT PUBLISHED — CVE-2026-54030 (danny-avila LibreChat). Public exploit reference added. Jun 25 Published (CNA: GitHub_M)
LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.5, LibreChat's MCP OAuth implementation does not validate that the resource parameter from OAuth Protected Resource metadata (RFC 9728) matches the configured MCP server URL, allowing a malicious MCP server to steal access tokens intended for a legitimate server. This vulnerability is fixed in 0.8.5.
| Date | Event | Detail |
|---|---|---|
| June 11, 2026 | Reserved | Reserved by GitHub_M |
| June 25, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-54030 (danny-avila LibreChat). Public exploit reference added. |
| June 25, 2026 | Published | Published (CNA: GitHub_M) |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| danny-avila | LibreChat | — | < 0.8.5 | — |
Authoritative record: CVE-2026-54030 at cve.org
Vendors: danny-avila
Weaknesses: CWE-346
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-54030 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.