CVE-2025-68480GHSA-428G-F7CQ-PGP5PYSEC-2026-1605
Marshmallow has DoS in Schema.load(many)
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 3.26.2, 4.1.2
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- marshmallow-code marshmallow
From 3.0.0rc1 · fixed in 3.26.2; From 4.0.0 · fixed in 4.1.2
- marshmallowPyPI
From 3.0.0rc1 · fixed in 3.26.2
- marshmallowPyPI
From 4.0.0 · fixed in 4.1.2
- marshmallowPyPI
From 3.0.0rc1 · fixed in 3.26.2; From 4.0.0 · fixed in 4.1.2