Bug 2424511 (CVE-2025-68480)

Summary: CVE-2025-68480 github.com/marshmallow-code/marshmallow: Marshmallow: Denial of Service via crafted request to Schema.load function
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: carogers, caswilli, dhanak, drosa, dsimansk, erezende, haoli, hkataria, jajackso, jcammara, jkoehler, jmitchel, jneedle, kaycoth, kegrant, kingland, koliveir, kshier, kverlaen, lphiri, mabashia, manissin, matzew, mnovotny, pbraun, sausingh, shvarugh, simaishi, smcdonal, stcannon, teagle, tfister, thavo, yguenane
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Marshmallow. A remote attacker could exploit a vulnerability in the `Schema.load(data, many=True)` function by sending a moderately sized request. This could lead to a denial of service (DoS) due to the disproportionate consumption of CPU time, making the system unavailable to legitimate users.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2025-12-22 22:04:12 UTC
Marshmallow 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.