Uncontrolled resource consumption in HackerOne negotiator node module
Priority LOW 36CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-400.
Summary
negotiator is an HTTP content negotiator for Node.js and is used by many modules and frameworks including Express and Koa. The header for "Accept-Language", when parsed by negotiator 0.6.0 and earlier is vulnerable to Regular Expression Denial of Service via a specially crafted string.
Why it matters now
EPSS 0.01389 72nd percentileScored 2026-11-07
Fix Fixed negotiator (npm): 0.6.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| HackerOne | negotiator node module | up to 0.6.0 | — | No fix listed | CNA |
| — | negotiator (npm) | before 0.6.1 | 0.6.1 | Patch available | GHSA-7mc5-chhp-fmc3 |
- negotiator node module VendorHackerOne Affected up to 0.6.0 Fixed in — No fix listed CNA
- negotiator (npm) Vendor— Affected before 0.6.1 Fixed in 0.6.1 Patch available GHSA-7mc5-chhp-fmc3
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:negotiator_project:negotiator:*:*:*:*:*:node.js:*:* | up to 0.6.0 | Vulnerable | Negotiator Project |
- cpe:2.3:a:negotiator_project:negotiator:*:*:*:*:*:node.js:*:* Versions up to 0.6.0 Vulnerable ·Negotiator Project
Remediation
- Fix · GHSA-7mc5-chhp-fmc3 negotiator (npm) Fixed in 0.6.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2016-10539
- 2026-10-03 Alias added: GHSA-7mc5-chhp-fmc3
References
Sources
- CVE-2016-10539 · CVE Program
- CVE-2016-10539 · NVD
- FIRST EPSS
- GHSA-7mc5-chhp-fmc3 · GitHub Advisory Database · CC BY 4.0
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