mcp-pdftool-plus

GHSA-fh2f-vcxw-gm22

Malicious code in mcp-pdftool-plus (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 0.1.3`

## Source: kam193 (2e92dea8be02288f271dacad2cd77f1bdd54596da1691cb738c4a7b7b4f77d21)
When using the library, the hidden code starts a reverse shell


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Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.


Campaign: 2026-01-mcp-pdftool-plus


Reasons (based on the campaign):


 - The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim's machine.


 - action-hidden-in-lib-usage

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/mcp-pdftool-plus/MAL-2026-603.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/mcp-pdftool-plus
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/mcp-pdftool-plus/MAL-2026-603.json
- https://github.com/advisories/GHSA-fh2f-vcxw-gm22

Compromised versions (1)

= 0.1.3

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.