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CVE-2016-10539

negotiator is an HTTP content negotiator for Node.js and is used by many modules and frameworks including Express and Koa. The header for…

High7.5EPSS 1.4%
Published
Updated
Reserved
Assigned by
hackerone

Description

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.

Scores

CVSS scores of CVE-2016-10539, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.0High7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
1.4% · top 28% of all CVEs (2 Nov 2026)

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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

Affected products

  • HackerOne · negotiator node module

    • affected <= 0.6.0

Affected packages

From reviewed advisories of the GitHub Advisory Database.

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .