What is CVE-2026-25148?

CVE-2026-25148 is a medium-severity vulnerability in Qwik, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-03.

How severe is CVE-2026-25148?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Qwik

CVE-2026-25148

Qwik is a performance focused javascript framework. Prior to version 1.19.0, a Cross-Site Scripting vulnerability in Qwik.js' server-side rendering virtual attribute serialization allows a remote attacker to inject arbitrary web scripts into server-rendered pages via virtual attributes. Successful exploitation permits script execution in a victim's browser in the context of the affected origin. This issue has been patched in version 1.19.0.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (23.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Qwik
Qwikdev Qwik — versions < 1.19.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-25148?: CVE-2026-25148 is a medium-severity vulnerability in Qwik, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-03.
How severe is CVE-2026-25148?: Medium severity. CVSS v3 base score is 6.1 out of 10.