CVE-2025-68480

NameCVE-2025-68480
DescriptionMarshmallow is a lightweight library for converting complex objects to and from simple Python datatypes. In versions from 3.0.0rc1 to before 3.26.2 and from 4.0.0 to before 4.1.2, Schema.load(data, many=True) is vulnerable to denial of service attacks. A moderately sized request can consume a disproportionate amount of CPU time. This issue has been patched in version 3.26.2 and 4.1.2.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1123888

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
python-marshmallow (PTS)bullseye3.10.0-1vulnerable
bookworm3.18.0-1vulnerable
forky, sid, trixie3.26.1-0.2vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
python-marshmallowsource(unstable)(unfixed)1123888

Notes

https://github.com/marshmallow-code/marshmallow/security/advisories/GHSA-428g-f7cq-pgp5
https://github.com/marshmallow-code/marshmallow/commit/218d98a785d3bd25dad8880bb07e9cce70340f31 (4.1.2)
https://github.com/marshmallow-code/marshmallow/commit/70141f4180fb94ced3544cdefdaff89172dd3956 (4.1.2)
https://github.com/marshmallow-code/marshmallow/commit/36f87877d0e889e682386a0121eabe030cde57b1 (4.1.2)
https://github.com/marshmallow-code/marshmallow/commit/0356a3f1c307830f8ded56d823abca5611c594c9 (3.26.2)
https://github.com/marshmallow-code/marshmallow/commit/6d4a17dad54ea9711040c6aa6ba4d59267242a41 (3.26.2)
https://github.com/marshmallow-code/marshmallow/commit/489a8d421dc7955bb53b89e962d69465fbc5b6af (3.26.2)

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