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CVE-2025-26619

18
FAUCET Score

CVE-2025-26619 describes a cross-site scripting (CWE-79) vulnerability in Vega and vega-functions versions 5.30.0 and lower, and 5.15.0 and lower respectively. This flaw allows attackers to call unsupported JavaScript functions via the Vega expression language. With a CVSS score of 6.1 (Medium), it requires user interaction and network access, potentially leading to limited impact on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.16.0CPE matchmatch criteria
cpe:2.3:a:vega-functions_project:vega-functions:*:*:*:*:*:node.js:*:*
< 5.31.0CPE matchmatch criteria
cpe:2.3:a:vega_project:vega:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 4.0

5.3MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
LOW
SS Integrity
LOW
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.32%
Probability of exploitation in next 30 days
EPSS Percentile
24.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0032 is in the 25th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 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 (3)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: vegaFixed in: 5.31.0
npmpatch availablevia ghsa
Product: vega-functionsFixed in: 5.16.0

Vendor Advisories (1)

npmGHSA-rcw3-wmx7-cphrmedium

Vega Cross-Site Scripting (XSS) via event filter when not using CSP mode expressionInterpeter

Mar 27, 2025

References

github.com / vega/vega/commit/8fc129a6f8a11e96449c4ac0f63de0e5bfc7254c
Patch
github.com / vega/vega/issues/3984
ExploitIssue Tracking
github.com / vega/vega-lite/issues/9469
Issue Tracking
github.com / vega/vega/security/advisories/GHSA-rcw3-wmx7-cphr
ExploitVendor Advisory