DEBIAN-CVE-2026-8159

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Source
https://security-tracker.debian.org/tracker/CVE-2026-8159
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-8159.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-8159
Upstream
Published
2026-05-12T10:16:48Z
Modified
2026-09-14T17:03:50Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Debian:12 / node-multiparty

Package

Name
node-multiparty
Purl
pkg:deb/debian/node-multiparty?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.2.3-2
4.2.3-3
4.2.3-4
4.2.3-5
4.3.0-1
4.3.0+~4.2.1-1
4.3.1+~4.2.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-8159.json"

Debian:13 / node-multiparty

Package

Name
node-multiparty
Purl
pkg:deb/debian/node-multiparty?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.2.3-3
4.2.3-4
4.2.3-5
4.3.0-1
4.3.0+~4.2.1-1
4.3.1+~4.2.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-8159.json"

Debian:14 / node-multiparty

Package

Name
node-multiparty
Purl
pkg:deb/debian/node-multiparty?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
4.3.0-1

Affected versions

4.*
4.2.3-3
4.2.3-4
4.2.3-5

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-8159.json"