CVE-2026-25150: Qwik is a performance focused javascript framework

This month

CRITICAL 9.3REMOTEUPGRADE

CVE-2026-25150 is a critical-severity flaw (CVSS 9.3) affecting qwik. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Qwik is a performance focused javascript framework. Prior to version 1.19.0, a prototype pollution vulnerability exists in the formToObj() function within @builder.io/qwik-city middleware. The function processes form field names with dot notation (e.g., user.name) to create nested objects, but fails to sanitize dangerous property names like __proto__, constructor, and prototype. This allows unauthenticated attackers to pollute Object.prototype by

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.3 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-1321
Published	2026-02-03
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: qwik

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-03 22:16 UTCPublished CVE record published
2026-06-17 10:24 UTCUpdated Record last modified

qwik qwik UPGRADE

Affected: < 1.19.0

Fixed in: 1.19.0

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls qwik

2. UPGRADE to 1.19.0

npm install qwik@">=1.19.0"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-25150?

qwik: upgrade to 1.19.0. Exact commands for each OS are on this page.

Is CVE-2026-25150 being exploited?

CVE-2026-25150 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-25150 affect?

CVE-2026-25150 affects qwik. Severity is critical (CVSS 9.3). Qwik is a performance focused javascript framework. Prior to version 1.19.0, a prototype pollution vulnerability exists in the formToObj() function within @builder.io/qwik-city middleware. The function processes form field names with dot no

How urgent is CVE-2026-25150?

Priority 51/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-32701 HIGH 7.5 UPGRADE Qwik is a performance-focused JavaScript framework
CVE-2026-27971 CRITICAL 9.8 UPGRADE Qwik is a performance focused javascript framework
CVE-2026-25155 MEDIUM 5.9 UPGRADE Qwik is a performance focused javascript framework
CVE-2026-25151 MEDIUM 5.9 UPGRADE Qwik is a performance focused javascript framework
CVE-2026-25149 MEDIUM 6.1 UPGRADE Qwik is a performance focused javascript framework

References

← Back to latest CVEs