PYSEC-2026-591

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Import Source
https://github.com/pypa/advisory-database/blob/main/vulns/funcdesc/PYSEC-2026-591.yaml
JSON Data
https://api.osv.dev/v1/vulns/PYSEC-2026-591
Aliases
Published
2026-06-30T20:24:41Z
Modified
2026-07-01T12:45:04.741285510Z
Summary
Malicious code in funcdesc (PyPI)
Details

Part of the "Hades" wave of the Shai-Hulud supply-chain campaign. On 2026-06-08, malicious phantom releases of funcdesc were published to PyPI using stolen credentials. The package executes a bundled JavaScript payload (via the Bun runtime) on import that harvests and exfiltrates credentials and attempts self-propagation. This entry is a summary; behavior may not be fully characterized here. See the linked references for detailed analysis and indicators of compromise.

References

Affected packages

PyPI / funcdesc

Package

Affected ranges

Affected versions

0.*
0.2.2
0.2.3

Database specific

source
"https://github.com/pypa/advisory-database/blob/main/vulns/funcdesc/PYSEC-2026-591.yaml"