CVE-2026-8159
HIGH
7,5
Source: ce714d77-add3-4f53-aff5-83d477b104bb
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Description
AI Translation Available
[email protected] 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 [email protected] or higher.
1333
Inefficient Regular Expression Complexity
DraftCommon Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Resource Consumption (Cpu)
Applicable Platforms
All platforms may be affected
https://cna.openjsf.org/security-advisories.html
https://github.com/pillarjs/multiparty/security/advisories/GHSA-65x3-rw7q-gx94
https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_…