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Vulnerability details: VCID-jzdz-tvhs-1bf6
Vulnerability ID VCID-jzdz-tvhs-1bf6
Aliases CVE-2025-66648
GHSA-m9rg-mr6g-75gm
Summary vega-functions provides function implementations for the Vega expression language. Prior to version 6.1.1, for sites that allow users to supply untrusted user input, malicious use of an internal function (not part of the public API) could be used to run unintentional javascript (XSS). This issue is fixed in vega-functions `6.1.1`. There is no workaround besides upgrading. Using `vega.expressionInterpreter` as described in CSP safe mode does not prevent this issue.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 7.2 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-66648.json
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2025-66648
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2025-66648
epss 0.00029 https://api.first.org/data/v1/epss?cve=CVE-2025-66648
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-m9rg-mr6g-75gm
cvssv3.1 7.2 https://github.com/vega/vega
generic_textual HIGH https://github.com/vega/vega
cvssv3.1 7.2 https://github.com/vega/vega/security/advisories/GHSA-m9rg-mr6g-75gm
cvssv3.1_qr HIGH https://github.com/vega/vega/security/advisories/GHSA-m9rg-mr6g-75gm
generic_textual HIGH https://github.com/vega/vega/security/advisories/GHSA-m9rg-mr6g-75gm
ssvc Track https://github.com/vega/vega/security/advisories/GHSA-m9rg-mr6g-75gm
cvssv3.1 7.2 https://nvd.nist.gov/vuln/detail/CVE-2025-66648
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2025-66648
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-66648.json
https://api.first.org/data/v1/epss?cve=CVE-2025-66648
https://github.com/vega/vega
1125185 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1125185
2427238 https://bugzilla.redhat.com/show_bug.cgi?id=2427238
CVE-2025-66648 https://nvd.nist.gov/vuln/detail/CVE-2025-66648
GHSA-m9rg-mr6g-75gm https://github.com/advisories/GHSA-m9rg-mr6g-75gm
GHSA-m9rg-mr6g-75gm https://github.com/vega/vega/security/advisories/GHSA-m9rg-mr6g-75gm
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-66648.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N Found at https://github.com/vega/vega
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N Found at https://github.com/vega/vega/security/advisories/GHSA-m9rg-mr6g-75gm
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-01-06T15:40:01Z/ Found at https://github.com/vega/vega/security/advisories/GHSA-m9rg-mr6g-75gm
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2025-66648
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.088
EPSS Score 0.00029
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:59:42.587493+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2025/66xxx/CVE-2025-66648.json 38.6.0