EUVD-2026-75976Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-reachable parser triggers memory exhaustion via single unauthenticated request; no confidentiality or integrity impact applies.
Primary rating from Vendor (openjs).
CVSS VectorVendor: openjs
Lifecycle Timeline
4DescriptionCVE.org
multiparty is a Node.js library for parsing multipart/form-data request bodies. In versions from 2.1.0 up to but not including 4.3.1, the parser does not bound the amount of memory used while accumulating the headers of a single multipart part. An unauthenticated attacker can send a single request whose part carries a very large volume of header bytes, forcing the parser to buffer all of them and exhausting the process memory, which crashes the server. This is a denial of service with no confidentiality or integrity impact. The issue is fixed in multiparty 4.3.1, which caps the size of the accumulated part headers. Users should upgrade to multiparty 4.3.1 or later.
AnalysisAI
Memory exhaustion in multiparty Node.js library (versions 2.1.0 through <4.3.1) allows any unauthenticated network attacker to crash the host process with a single crafted HTTP request. The parser accumulates multipart part headers into an unbounded in-memory buffer with no size cap, consuming available process memory until the Node.js server is killed. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The target application must be running a Node.js HTTP server that uses multiparty version 2.1.0 through <4.3.1 to parse multipart/form-data requests on a network-accessible endpoint. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) accurately reflects the exploitation profile: unauthenticated, single-request, low-complexity access against any exposed Node.js process using this library version. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade multiparty to version 4.3.1 or later, which caps the size of accumulated part headers and eliminates the unbounded memory growth at the parser level. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Node.js applications using multiparty versions 2.1.0 through 4.3.0 and assess their exposure to untrusted network traffic. …
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External POC / Exploit Code
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