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CVE-2020-13822

20
FAUCET Score

CVE-2020-13822 describes a signature malleability vulnerability in the Elliptic package 6.5.2 for Node.js, specifically affecting ECDSA signatures due to encoding variations, leading null bytes, or integer overflows. This high-severity vulnerability (CVSS 7.7) has a network attack vector and high impact on confidentiality and integrity, though its complexity is also high. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
6.5.2CPE matchmatch criteria
cpe:2.3:a:indutny:elliptic:6.5.2:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

7.7HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
2.2
Impact Score
5.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.63%
Probability of exploitation in next 30 days
EPSS Percentile
83.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0263 is in the 41st percentile among its peer group of 8,915 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

npmpatch availablevia ghsa
Product: ellipticFixed in: 6.5.3
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.6Fixed in: openshift4/ose-grafana:v4.6.0-202010061132.p0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.6Fixed in: openshift4/ose-prometheus:v4.6.0-202009290409.p0
View patch
redhatpatch availablevia redhat_api
Product: Text-Only RHSSOFixed in: nodejs
View patch
redhatvendor investigatingvia redhat_api
Product: OpenShift Service Mesh 1Fixed in: servicemesh-grafana
redhatvendor investigatingvia redhat_api
Product: Red Hat Quay 3Fixed in: quay/quay-rhel8
redhatno patchvia redhat_api
Product: Red Hat Single Sign-On 7Fixed in: nodejs
redhatno patchvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: golang-github-prometheus-promu

Vendor Advisories (2)

npmGHSA-vh7m-p724-62c2high

Signature Malleabillity in elliptic

Jul 29, 2020
redhatCVE-2020-13822Moderate

nodejs-elliptic: improper encoding checks allows a certain degree of signature malleability in ECDSA signatures

Jun 1, 2020

References

github.com / indutny/elliptic/issues/226
ExploitThird Party Advisory
medium.com / %40herman_10687/malleability-attack-why-it-matters-7b5f59fb99a4
npmjs.com / package/elliptic
Third Party Advisory
yondon.blog / 2019/01/01/how-not-to-use-ecdsa
Third Party Advisory