7.5

CVE-2026-8159

multiparty vulnerable to ReDoS via filename parsing

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Pillarjs ≫ Multiparty SwPlatformnode.js Version < 4.3.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.34% 0.251
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
ce714d77-add3-4f53-aff5-83d477b104bb 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-1333 Inefficient Regular Expression Complexity

The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.

https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS
Not Applicable
https://cna.openjsf.org/security-advisories.html
Third Party Advisory
https://github.com/pillarjs/multiparty/security/advisories/GHSA-65x3-rw7q-gx94
Vendor Advisory
Mitigation