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CVE-2025-13466

body-parser vulnerable to denial of service when url encoding is used

MEDIUM
5.5
CVSS Score
Published: November 24, 2025 at 06:29 PM UTC
Updated: October 18, 2026 at 08:10 PM UTC
2 products affected across 2 vendorsBody ParserBody Parser

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

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

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMopenjs
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-400

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