TI-2025-19556 Aliases CVE-2025-26619 GHSA-rcw3-wmx7-cphr

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

MEDIUM 63CWE-79Published 2025-03-27 · Updated 2025-03-27

Key facts

Attack vector: Network
Privileges required: None
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting
Confidentiality · integrity · availability: None · None · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Vega is a visualization grammar, a declarative format for creating, saving, and sharing interactive visualization designs. In `vega` 5.30.0 and lower and in `vega-functions` 5.15.0 and lower , it was possible to call JavaScript functions from the Vega expression language that were not meant to be supported. The issue is patched in `vega` `5.31.0` and `vega-functions` `5.16.0`. Some workarounds are available. Run `vega` without `vega.expressionInterpreter`. This mode is not the default as it is slower. Alternatively, using the interpreter described in CSP safe mode (Content Security Policy) prevents arbitrary Javascript from running, so users of this mode are not affected by this vulnerability.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00354 29th percentileScored 2026-11-07

Public exploit Yes 2 exploit referencesTagged by NVD

Fix Fixed vega (vega): 5.31.0vega (npm): 5.31.0+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
vega	vega	before 5.31.0	5.31.0	Patch available	CNA
—	vega (npm)	before 5.31.0	5.31.0	Patch available	GHSA-rcw3-wmx7-cphr
—	vega-functions (npm)	before 5.16.0	5.16.0	Patch available	GHSA-rcw3-wmx7-cphr

vega Vendorvega Affected before 5.31.0 Fixed in 5.31.0 Patch available CNA
vega (npm) Vendor— Affected before 5.31.0 Fixed in 5.31.0 Patch available GHSA-rcw3-wmx7-cphr
vega-functions (npm) Vendor— Affected before 5.16.0 Fixed in 5.16.0 Patch available GHSA-rcw3-wmx7-cphr

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:vega-functions_project:vega-functions::::::node.js::*	before 5.16.0	Vulnerable	Vega-functions Project
cpe:2.3:a:vega_project:vega::::::node.js::*	before 5.31.0	Vulnerable	Vega Project

cpe:2.3:a:vega-functions_project:vega-functions:*:*:*:*:*:node.js:*:* Versions before 5.16.0 Vulnerable ·Vega-functions Project
cpe:2.3:a:vega_project:vega:*:*:*:*:*:node.js:*:* Versions before 5.31.0 Vulnerable ·Vega Project

Remediation

Fix · CNA vega (vega) Fixed in 5.31.0
Fix · GHSA-rcw3-wmx7-cphr vega (npm) Fixed in 5.31.0 Advisory →
Fix · GHSA-rcw3-wmx7-cphr vega-functions (npm) Fixed in 5.16.0 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2025-26619
2026-10-03 Alias added: GHSA-rcw3-wmx7-cphr

References

Exploit 2

Patch 1

https://github.com/vega/vega/commit/8fc129a6f8a11e96449c4ac0f63de0e5bfc7254c

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2025-26619

Other 2

TI-2025-40262 Cross-site scripting in vega CVSS 3.1CRITICAL 9.3
TI-2025-18958 Vega allows Cross-site Scripting via the vlSelectionTuples function CVSS 4.0MEDIUM 6.9
TI-2025-37279 Cross-site scripting in vega CVSS 3.1HIGH 8.1
TI-2020-16117 Cross-site scripting in vega CVSS 3.1HIGH 8.7
TI-2026-02866 VEGA: Privilege escalation through unsecured configuration interface in VEGAPULS devices CVSS 3.1HIGH 7.5
TI-2025-41032 `vega-functions` vulnerable to Cross-site Scripting via `setdata` function CVSS 3.1HIGH 7.2

See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences