negotiator is an HTTP content negotiator for Node.js and is used by many modules and frameworks including Express and Koa
Published May 31, 2018
7.5
HIGHCVSS 3.0
EPSS 1.41%
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.
Affected products
-
- Version <= 0.6.0StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| HackerOne | Negotiator Node Module | n/a |
|
- ≤ 0.6.0
No data.
No Red Hat product state for this CVE.
negotiator
npm
Introduced 0 Fixed 0.6.1
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | negotiator | 0 | 0.6.1 |
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.41% (0.01411) | 71.68th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.40% (0.01399) | 68.84th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.47% (0.00468) | 62.44th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.11% (0.00112) | 46.19th | v3 (v2023.03.01) |
| Mar 5, 2024 | 0.11% (0.00112) | 43.45th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00103) | 40.66th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00885) | 26.24th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00885) | 10.50th | v2 (v2022.01.01) |
References (4)
- https://github.com/advisories/GHSA-7mc5-chhp-fmc3 Advisory
- https://nodesecurity.io/advisories/106 x_refsource_MISCThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-10539
- https://www.npmjs.com/advisories/106
| Link | Providers | Tags |
|---|---|---|
| https://github.com/advisories/GHSA-7mc5-chhp-fmc3 | Advisory | |
| https://nodesecurity.io/advisories/106 | x_refsource_MISCThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-10539 | ||
| https://www.npmjs.com/advisories/106 |
Change history (0)
No recorded changes yet.