Is CVE-2025-68480 in the CISA KEV catalog?

No. CVE-2025-68480 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-68480?

CVE-2025-68480 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2025-68480?

CVE-2025-68480 has an EPSS score of 0.25% (16th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-68480?

Upgrade python-marshmallow on debian unstable to 3.26.2-0.1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2025-68480

MEDIUM

5.3

CVSS v3

NVD

Description

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.

CWE-405

How to fix

Remediation Available

python-marshmallowDebian

Fixed in:3.26.2-0.1CVE-2025-68480

python-marshmallowUbuntu

Fixed in:3.0.0b3-1ubuntu0.1~esm1USN-8225-1

Fixed in:3.4.0-1ubuntu0.1~esm1USN-8225-1

Fixed in:3.13.0-1ubuntu0.1~esm1USN-8225-1

Fixed in:3.20.1-1.1ubuntu0.1~esm1USN-8225-1

python3-marshmallowUbuntu

Fixed in:3.0.0b3-1ubuntu0.1~esm1USN-8225-1

Fixed in:3.4.0-1ubuntu0.1~esm1USN-8225-1

Fixed in:3.13.0-1ubuntu0.1~esm1USN-8225-1

Fixed in:3.20.1-1.1ubuntu0.1~esm1USN-8225-1

python3-marshmallow-docUbuntu

Fixed in:3.0.0b3-1ubuntu0.1~esm1USN-8225-1

Fixed in:3.4.0-1ubuntu0.1~esm1USN-8225-1

Fixed in:3.13.0-1ubuntu0.1~esm1USN-8225-1

Fixed in:3.20.1-1.1ubuntu0.1~esm1USN-8225-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploit Intelligence

0.25%probability of exploitation in 30 days

16thpercentile

Low risk: more likely to be exploited than 16% of all known CVEs.

References

Other references2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-12-23.