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PYSEC-2026-668

MoinMoin Directory traversal vulnerability

Details

Directory traversal vulnerability in MoinMoin 1.5.8 and earlier allows remote attackers to overwrite arbitrary files via a `..` (dot dot) in the MOIN_ID user ID in a cookie for a userform action. NOTE: this issue can be leveraged for PHP code execution via the quicklinks parameter. The issue has been fixed on [e69a16b6e630](http://hg.moinmo.in/moin/1.5/rev/e69a16b6e630).

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Affected packages

PyPI / moin
Introduced in: 0

No fixed version published yet for moin (pip). Pin to a known-safe version or switch to an alternative.

References