CVE-2018-12121

mediumpriority · track · 34EPSS 0.102 · 96 %ileDEEUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

10.2% (96th) EPSS

CVSS 5 · medium

Is it mine?

31 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0: Denial of Service with large HTTP headers: By using a combination of many requests with maximum sized headers (almost 80 KB per connection), and carefully timed completion of the headers, it is possible to cause the HTTP server to abort from heap allocation failure. Attack potential is mitigated by the use of a load balancer or other proxy layer.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USprimary

affected products (31)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Dell PowerEdge T40all versionscert_bundDEcpe:/h:dell:poweredge:t40
Dell Secure Connect Gateway <5.36.00.16all versionscert_bundDE
F5 BIG-IPall versionscert_bundDEcpe:/a:f5:big-ip:-
Gentoo Linuxall versionscert_bundDEcpe:/o:gentoo:linux:-
Open Source CentOSall versionscert_bundDEcpe:/o:centos:centos:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Red Hat Enterprise Linux 7all versionscert_bundDEcpe:/o:redhat:enterprise_linux:7
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Dell Secure Connect Gateway< 5.36.00.16cert_bundDE
The Node.js Project Node.js≤ All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0enisa_euvdEU
nodejs node.js10.0.0 → 10.14.0nvdUScpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*
nodejs node.js11.0.0 → 11.3.0nvdUScpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*
nodejs node.js6.0.0 → 6.15.0nvdUScpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*
nodejs node.js8.0.0 → 8.14.0nvdUScpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*
redhat enterprise linux= 8.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
redhat enterprise linux desktop= 7.0nvdUScpe:2.3:o:redhat:enterprise_linux_desktop:*:*:*:*:*:*:*:*
redhat enterprise linux eus= 8.1nvdUScpe:2.3:o:redhat:enterprise_linux_eus:*:*:*:*:*:*:*:*

showing 20 of 31

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-0517Red Hat Enterprise Linux: Mehrere SchwachstellenDeutsch2019-08-06csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux ausnutzen, um dadurch die Integrität, Vertraulichkeit und Verfügbarkeit zu gefährden.
WID-SEC-W-2023-2535Red Hat rh-nodejs8-nodejs: Mehrere SchwachstellenDeutsch2019-07-22csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat rh-nodejs8-nodejs ausnutzen, um Dateien zu manipulieren.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2018-11-28modified 2026-06-17

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+9607 more

references (33)

External citations — patches, advisories, analysis.

scry

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