Medium severity · published Feb 3, 2026
CVE-2026-25148
Qwik SSR XSS via Unsafe Virtual Node Serialization
6.1
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QW
qwik · QwikDev
< 1.19.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-25148
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-25148
Patch
https://github.com/QwikDev/qwik/commit/fe2d9232c0bcec99411d51a00dae29295871d094
Vendor Advisory
https://github.com/QwikDev/qwik/security/advisories/GHSA-m6jq-g7gq-5w3c
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