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CVE-2020-26296

26
FAUCET Score

CVE-2020-26296 describes an XSS vulnerability in Vega, an npm package for creating interactive visualizations, affecting versions prior to 5.17.3. An attacker could exploit this by crafting a malicious Vega expression to execute arbitrary JavaScript on a victim's machine. This vulnerability carries a high CVSS score of 8.7, indicating a network-based attack with low complexity, requiring user interaction, and leading to high impact on confidentiality and integrity. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the vulnerability's nature warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.17.3CPE matchmatch criteria
cpe:2.3:a:vega_project:vega:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

8.7HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
5.8
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.69%
Probability of exploitation in next 30 days
EPSS Percentile
74.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0169 is in the 89th percentile among its peer group of 887 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.1 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 (2)

npmpatch availablevia ghsa
Product: vegaFixed in: 5.17.3
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-logging-kibana6

Vendor Advisories (2)

npmGHSA-r2qc-w64x-6j54low

XSS in Vega

Dec 30, 2020
redhatCVE-2020-26296Important

nodejs-vega: Cross-site scripting in visualization type

Dec 21, 2020

References

github.com / vega/vega/issues/3018
Third Party Advisory
github.com / vega/vega/pull/3019
Third Party Advisory
github.com / vega/vega/releases/tag/v5.17.3
Release NotesThird Party Advisory
github.com / vega/vega/security/advisories/GHSA-r2qc-w64x-6j54
Third Party Advisory
npmjs.com / package/vega
Third Party Advisory