jsonschemavalid

GHSA-8h47-2x6f-r4f9

Malicious code in jsonschemavalid (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 4.26.0`

## Source: kam193 (66c7a352526170a98abaa8fcccfd433c9e8326e340df4904adce19bd13a05902)
A clone of a legitimate package with an embeded reverse shell. In the published version, the reverse shell was connecting to a private IP address suggesting the package was not yet fully weaponized.


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


Campaign: 2026-07-jsonschemavalidation


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.


 - clones-real-package


 - obfuscation

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/jsonschemavalid/MAL-2026-6970.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/jsonschemavalid
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/jsonschemavalid/MAL-2026-6970.json
- https://github.com/advisories/GHSA-8h47-2x6f-r4f9

Compromised versions (1)

= 4.26.0

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