Search criteria
6 vulnerabilities found for multiparty by multiparty
CVE-2026-8162 (GCVE-0-2026-8162)
Vulnerability from nvd – Published: 2026-05-12 09:05 – Updated: 2026-05-12 12:33
VLAI?
Title
multiparty vulnerable to Denial of Service via Uncaught Exception in filename* parameter parsing
Summary
multiparty@4.2.3 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 multiparty@4.3.0 or higher.
Severity ?
7.5 (High)
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| multiparty | multiparty |
Affected:
0 , ≤ 4.2.3
(semver)
Unaffected: 4.3.0 (semver) |
Credits
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CVE-2026-8161 (GCVE-0-2026-8161)
Vulnerability from nvd – Published: 2026-05-12 08:50 – Updated: 2026-05-12 12:32
VLAI?
Title
multiparty vulnerable to Denial of Service via Prototype Pollution leading to Uncaught Exception
Summary
multiparty@4.2.3 and lower versions are vulnerable to denial of service via uncaught exception. By sending a multipart/form-data request with a field name that collides with an inherited Object.prototype property such as __proto__, constructor, or toString, the parser invokes .push() on the inherited prototype value rather than an array, throwing a TypeError that propagates as an uncaught exception and crashes the process. Impact: any service accepting multipart uploads via multiparty is affected. Workarounds: none. Upgrade to multiparty@4.3.0 or higher.
Severity ?
7.5 (High)
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| multiparty | multiparty |
Affected:
0 , ≤ 4.2.3
(semver)
Unaffected: 4.3.0 (semver) |
Credits
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CVE-2026-8159 (GCVE-0-2026-8159)
Vulnerability from nvd – Published: 2026-05-12 08:35 – Updated: 2026-05-12 12:33
VLAI?
Title
multiparty vulnerable to ReDoS via filename parsing
Summary
multiparty@4.2.3 and lower versions are vulnerable to denial of service via regular expression backtracking in the Content-Disposition filename parameter parser. A crafted multipart upload with a long header value can cause regex matching to take seconds, blocking the event loop. Impact: any service accepting multipart uploads via multiparty is affected. Workarounds: limiting upload sizes at the proxy or gateway layer reduces but does not eliminate the attack surface, since a small header of around 8 KB is sufficient to trigger the vulnerable backtracking. Upgrade to multiparty@4.3.0 or higher.
Severity ?
7.5 (High)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| multiparty | multiparty |
Affected:
0 , ≤ 4.2.3
(semver)
Unaffected: 4.3.0 (semver) |
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CVE-2026-8162 (GCVE-0-2026-8162)
Vulnerability from cvelistv5 – Published: 2026-05-12 09:05 – Updated: 2026-05-12 12:33
VLAI?
Title
multiparty vulnerable to Denial of Service via Uncaught Exception in filename* parameter parsing
Summary
multiparty@4.2.3 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 multiparty@4.3.0 or higher.
Severity ?
7.5 (High)
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| multiparty | multiparty |
Affected:
0 , ≤ 4.2.3
(semver)
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CVE-2026-8161 (GCVE-0-2026-8161)
Vulnerability from cvelistv5 – Published: 2026-05-12 08:50 – Updated: 2026-05-12 12:32
VLAI?
Title
multiparty vulnerable to Denial of Service via Prototype Pollution leading to Uncaught Exception
Summary
multiparty@4.2.3 and lower versions are vulnerable to denial of service via uncaught exception. By sending a multipart/form-data request with a field name that collides with an inherited Object.prototype property such as __proto__, constructor, or toString, the parser invokes .push() on the inherited prototype value rather than an array, throwing a TypeError that propagates as an uncaught exception and crashes the process. Impact: any service accepting multipart uploads via multiparty is affected. Workarounds: none. Upgrade to multiparty@4.3.0 or higher.
Severity ?
7.5 (High)
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| multiparty | multiparty |
Affected:
0 , ≤ 4.2.3
(semver)
Unaffected: 4.3.0 (semver) |
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CVE-2026-8159 (GCVE-0-2026-8159)
Vulnerability from cvelistv5 – Published: 2026-05-12 08:35 – Updated: 2026-05-12 12:33
VLAI?
Title
multiparty vulnerable to ReDoS via filename parsing
Summary
multiparty@4.2.3 and lower versions are vulnerable to denial of service via regular expression backtracking in the Content-Disposition filename parameter parser. A crafted multipart upload with a long header value can cause regex matching to take seconds, blocking the event loop. Impact: any service accepting multipart uploads via multiparty is affected. Workarounds: limiting upload sizes at the proxy or gateway layer reduces but does not eliminate the attack surface, since a small header of around 8 KB is sufficient to trigger the vulnerable backtracking. Upgrade to multiparty@4.3.0 or higher.
Severity ?
7.5 (High)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| multiparty | multiparty |
Affected:
0 , ≤ 4.2.3
(semver)
Unaffected: 4.3.0 (semver) |
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