No exploitation reportedFix available

CVE-2018-12122

Q: Is CVE-2018-12122 actively exploited?

Active exploitation of CVE-2018-12122 has not been confirmed. Its EPSS score was 41.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2018-12122?

CVE-2018-12122 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2018-11-28
Fixed in11.3.0 · 10.14.0 · 8.14.0 · 6.15.1
WeaknessCWE-400

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0: Slowloris HTTP Denial of Service: An attacker can cause a Denial of Service (DoS) by sending headers very slowly keeping HTTP or HTTPS connections and associated resources alive for a long period of time.

Timeline

dates in UTC

2018-11-2817:29CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-12122?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-12122?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Node.js

Branch	Affected	Fixed in	Source
11.x	≥ 11.0.0, < 11.3.0	11.3.0	NVD
10.x	≥ 10.0.0, < 10.14.0	10.14.0	NVD
8.x	≥ 8.0.0, < 8.14.0	8.14.0	NVD
6.x	≥ 6.0.0, < 6.15.1	6.15.1	NVD

Suse suse linux enterprise server

Branch	Affected	Fixed in	Source
12.x	= 12	no fix published	NVD
15.x	= 15	no fix published	NVD

Suse suse openstack cloud

Branch	Affected	Fixed in	Source
7.x	= 7	no fix published	NVD
8.x	= 8	no fix published	NVD

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Node.js to 11.3.0 · 10.14.0 · 8.14.0 · 6.15.1

Advisories and patches

nodejs.orgPatch · Vendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2026-10-08
OpenCVESSVC decisionnone—
NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
CNAweakness (CWE)CWE-400read 2026-10-23
NVDweakness (CWE)CWE-400read 2026-10-23
FIRST EPSSEPSS score41.3 %read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2018-11-28
Last Modified: 2026-10-08
NVD status: Modified

Frequently asked questions

What is CVE-2018-12122?

Is CVE-2018-12122 actively exploited?

Active exploitation of CVE-2018-12122 has not been confirmed. Its EPSS score was 41.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-12122?

CVE-2018-12122 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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