CVE-2026-87908 multiparty - Denial of Service

multiparty 2.1.0 < 4.3.1 contains a denial of service caused by unbounded memory usage while accumulating multipart part headers, letting unauthenticated attackers crash the server by sending large header volumes, exploit requires crafted request.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.51% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
11 September 2026
Updated
15 October 2026
Weakness
CWE-400

Vendor fix

Upgrade to multiparty 4.3.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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