CVEsSylphxAICVE-2026-62264Published Oct 30, 18:32 · Updated Oct 30, 18:32 UTC
7.5
HighCVSS 3.1 · from GitHub_M
CVE-2026-62264

PDF Reader MCP: HTTP transport accepts unauthenticated requests despite a configured MCP_API_KEY

pdf-reader-mcp · Information exposure · CWE-200
Affectedpdf-reader-mcp
FixNo fix listed yet.
PublishedOct 30, 18:32 · GitHub_M
ScoredOct 30 · 7.5 · GitHub_M
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:04 UTC

What we know

No known exploitation. CISA KEV, checked 22:04 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker only needs network access to the target. No login needed. CVSS: network, no privileges.
A successful attack can read data. CVSS impact.

Description

PDF Reader MCP is a Model Context Protocol server for reading PDF documents. In versions 2.2.0 and later prior to 3.0.1, when `MCP_TRANSPORT=http` enables the opt-in HTTP server, `@sylphx/pdf-reader-mcp` reads `MCP_API_KEY` and logs that `X-API-Key` authentication is enabled but never validates the `X-API-Key` header on incoming requests. The `/mcp` endpoint consequently accepts unauthenticated clients. With the default bind address of `0.0.0.0`, any client able to reach the port can invoke every PDF tool and read any PDF the server process can open on the host, despite the misleading authentication-enabled startup log. URL-based sources additionally permit limited server-side request forgery; private and loopback destinations are blocked by default unless `--allow-private-ips` is set. The default `stdio` transport is unaffected. This issue is fixed in version 3.0.1.

From GitHub_M

Affected and fixed versions

ProductAffectedFixed inpdf-reader-mcp>= 2.2.0, < 3.0.1–

Exploit code

Exploit-DBnone knownMetasploitnone knownNucleinone known

References

github.com/SylphxAI/anymd/security/advisories/GHSA-q344-5v34-gm84 · github.comrefsource_CONFIRMgithub.com/SylphxAI/anymd/pull/332 · github.comrefsource_MISCgithub.com/SylphxAI/anymd/commit/4c35f72862d729301e3912ab8c8317d2828cf4c2 · github.comrefsource_MISCgithub.com/SylphxAI/anymd/tree/v3.0.1 · github.comrefsource_MISC