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CVE-2025-68480

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:eb2886c7b8fb577679c3f3f7314824904422c45e36da3ed3f5e23278cb53b336
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"marshmallow","vendor":"marshmallow-code","versions":[{"status":"affected","version":">= 3.0.0rc1, < 3.26.2"},{"status":"affected","version":">= 4.0.0, < 4.1.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2a7c3e0f936b4667c9b859b94b0c6a514a5f6897f4856002fcb57384f13c8cd7 · sha256:51075f96bed1508f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2a7c3e0f936b4667c9b859b94b0c6a514a5f6897f4856002fcb57384f13c8cd7 · sha256:51075f96bed1508f… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-405","description":"CWE-405: Asymmetric Resource Consumption (Amplification)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2a7c3e0f936b4667c9b859b94b0c6a514a5f6897f4856002fcb57384f13c8cd7 · sha256:51075f96bed1508f… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/marshmallow-code/marshmallow/commit/d24a0c9df061c4daa92f71cf85aca25b83eee508","tags":["x_refsource_MISC"],"url":"https://github.com/marshmallow-code/marshmallow/commit/d24a0c9df061c4daa92f71cf85aca25b83eee508"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2a7c3e0f936b4667c9b859b94b0c6a514a5f6897f4856002fcb57384f13c8cd7 · sha256:51075f96bed1508f… · /containers/cna/references/1
{"name":"https://github.com/marshmallow-code/marshmallow/security/advisories/GHSA-428g-f7cq-pgp5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/marshmallow-code/marshmallow/security/advisories/GHSA-428g-f7cq-pgp5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2a7c3e0f936b4667c9b859b94b0c6a514a5f6897f4856002fcb57384f13c8cd7 · sha256:51075f96bed1508f… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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