CVE-2026-8162

7.5 HIGH 0.3% exploit odds Fix listed Denial of service Library

What it is

[email protected] and lower versions are vulnerable to denial of service via uncaught exception. By sending a multipart/form-data request with a Content-Disposition header whose filename* parameter contains a malformed percent-encoding, the parser invokes decodeURI on the value without try/catch. The resulting URIError propagates as an uncaught exception and crashes the process. Impact: any service accepting multipart uploads via multiparty is affected. Workarounds: none. Upgrade to [email protected] or higher.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of service disruption.
Exploit odds: 0.3% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-05-12 10:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 11:03 UTC Last updatedMost recent change to the record

Details

Published: 2026-05-12 10:16 UTC
Last modified: 2026-06-17 11:03 UTC
Exploit probability: 0.3% · EPSS, next 30 days
Weakness: CWE-755
Record status: Analyzed

Affected

Pillarjs Multiparty < 4.3.0

Attack profile CVSS 3.1 · 7.5

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

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

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Fix and advisories

https://github.com/pillarjs/multiparty/security/advisories/GHSA-xh3c-6gcq-g4rv

References

NVD record · CVE.org record