CVE-2026-25148
published 2026-02-03CVE-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…
PriorityP428medium6.1CVSS 3.1
AVNACLPRNUIRSCCLILAN
EPSS
0.31%
22.3th percentile
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.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| builder.io | qwik-city | >= 0 < 1.19.0 | 1.19.0 |
| qwik | qwik | < 1.19.0 | 1.19.0 |
| qwikdev | qwik | < 1.19.0 | 1.19.0 |
CVSS provenance
nvdv3.16.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
nvdv4.05.3MEDIUMCVSS: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
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
OSV
Qwik SSR XSS via Unsafe Virtual Node Serialization
osv·2026-02-03
CVE-2026-25148 [MEDIUM] Qwik SSR XSS via Unsafe Virtual Node Serialization
Qwik SSR XSS via Unsafe Virtual Node Serialization
### Summary
**Description**
A Cross-site Scripting (CWE-79) 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 affects qwik-city before version 1.19.0. This has been patched in qwik-city version 1.19.0.
### Impact
This vulnerability impacts applications that dynamically populate Virtual Node attributes with keys/values that users can influence. Applications that hard-code these keys/values are unaffected.
Qwik doesn't use traditional hydration. Instead, it serializes application state int
GHSA
Qwik SSR XSS via Unsafe Virtual Node Serialization
ghsa·2026-02-03
CVE-2026-25148 [MEDIUM] CWE-79 Qwik SSR XSS via Unsafe Virtual Node Serialization
Qwik SSR XSS via Unsafe Virtual Node Serialization
### Summary
**Description**
A Cross-site Scripting (CWE-79) 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 affects qwik-city before version 1.19.0. This has been patched in qwik-city version 1.19.0.
### Impact
This vulnerability impacts applications that dynamically populate Virtual Node attributes with keys/values that users can influence. Applications that hard-code these keys/values are unaffected.
Qwik doesn't use traditional hydration. Instead, it serializes application state int
No detection rules found.
No public exploits indexed.
2026-02-03
Published