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TI-2026-20310 Aliases CVE-2026-25148GHSA-m6jq-g7gq-5w3c

Qwik SSR XSS via Unsafe Virtual Node Serialization

Priority LOW 24CWE-79Published · Updated

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

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00349 28th percentileScored 2026-11-07
Fix Fixed qwik (QwikDev): 1.19.0@builder.io/qwik-city (npm): 1.19.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
QwikDevqwikbefore 1.19.01.19.0Patch availableCNA
—@builder.io/qwik-city (npm)before 1.19.01.19.0Patch availableGHSA-m6jq-g7gq-5w3c
  • qwik VendorQwikDev Affected before 1.19.0 Fixed in 1.19.0 Patch available CNA
  • @builder.io/qwik-city (npm) Vendor— Affected before 1.19.0 Fixed in 1.19.0 Patch available GHSA-m6jq-g7gq-5w3c

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:qwik:qwik:*:*:*:*:*:node.js:*:*before 1.19.0VulnerableQwikDev
  • cpe:2.3:a:qwik:qwik:*:*:*:*:*:node.js:*:* Versions before 1.19.0 Vulnerable ·QwikDev

Remediation

  • Fix · CNA qwik (QwikDev) Fixed in 1.19.0
  • Fix · GHSA-m6jq-g7gq-5w3c @builder.io/qwik-city (npm) Fixed in 1.19.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-25148
  2. 2026-10-03 Alias added: GHSA-m6jq-g7gq-5w3c

References

Patch 1

Advisory 2

Other 1

  • TI-2023-01211 Code Injection in builderio/qwik CVSS 3.1CRITICAL 10.0
  • TI-2023-02164 Cross-Site Request Forgery (CSRF) in builderio/qwik CVSS 3.1MEDIUM 6.5
  • TI-2024-27738 Cross-site Scripting (XSS) vulnerability due to improper HTML escaping in qwik CVSS 3.1MEDIUM 6.3
  • TI-2023-00388 Cross-site Scripting (XSS) - Generic in builderio/qwik CVSS 3.1MEDIUM 6.1
  • TI-2026-22314 Qwik affected by unauthenticated RCE via server$ Deserialization CVSS 4.0CRITICAL 9.2
  • TI-2026-20312 Prototype Pollution via FormData Processing in Qwik City CVSS 3.1CRITICAL 10.0
See all 10 →

Sources

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