How severe is CVE-2025-13466?

CVE-2025-13466 has a CVSS 4.0 base score of 5.5, rated medium severity.

Is CVE-2025-13466 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-13466?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-13466 have an EU (EUVD) identifier?

Yes. CVE-2025-13466 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198982.

When was CVE-2025-13466 published?

CVE-2025-13466 was published on 2025-11-24 and last updated on 2026-06-17.

CVE-2025-13466

CVE-2025-13466 is a medium-severity vulnerability with a CVSS 4.0 base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: Medium (CVSS 4.0 base score 5.5)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-198982
Weakness: CWE-400
Published: 2025-11-24
Last modified: 2026-06-17

Description

body-parser 2.2.0 is vulnerable to denial of service due to inefficient handling of URL-encoded bodies with very large numbers of parameters. An attacker can send payloads containing thousands of parameters within the default 100KB request size limit, causing elevated CPU and memory usage. This can lead to service slowdown or partial outages under sustained malicious traffic. This issue is addressed in version 2.2.1.

Frequently asked questions

What is CVE-2025-13466?: body-parser 2.2.0 is vulnerable to denial of service due to inefficient handling of URL-encoded bodies with very large numbers of parameters. An attacker can send payloads containing thousands of parameters within the default 100KB request size limit, causing elevated CPU and memory usage. This can lead to service slowdown or partial outages under sustained malicious traffic. This issue is addressed in version 2.2.1.
How severe is CVE-2025-13466?: CVE-2025-13466 has a CVSS 4.0 base score of 5.5, rated medium severity.
Is CVE-2025-13466 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-13466?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-13466 have an EU (EUVD) identifier?: Yes. CVE-2025-13466 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198982.
When was CVE-2025-13466 published?: CVE-2025-13466 was published on 2025-11-24 and last updated on 2026-06-17.

References

https://github.com/expressjs/body-parser/security/advisories/GHSA-wqch-xfxh-vrr4

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