TI-2025-33547 Aliases CVE-2025-53620 GHSA-qr9h-j6xg-2j72

Crashing any Qwik Server

HIGH 73CWE-248Published 2025-07-09 · Updated 2025-07-09

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-248.

Summary

@builder.io/qwik-city is the meta-framework for Qwik. When a Qwik Server Action QRL is executed it dynamically load the file containing the symbol. When an invalid qfunc is sent, the server does not handle the thrown error. The error then causes Node JS to exit. This vulnerability is fixed in 1.13.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00356 29th percentileScored 2026-11-07

Fix Fixed qwik (QwikDev): 1.13.0@builder.io/qwik-city (npm): 1.13.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
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

Vendor	Product	Affected versions	Fixed in	Status	Source
QwikDev	qwik	before 1.13.0	1.13.0	Patch available	CNA
—	@builder.io/qwik-city (npm)	before 1.13.0	1.13.0	Patch available	GHSA-qr9h-j6xg-2j72

qwik VendorQwikDev Affected before 1.13.0 Fixed in 1.13.0 Patch available CNA
@builder.io/qwik-city (npm) Vendor— Affected before 1.13.0 Fixed in 1.13.0 Patch available GHSA-qr9h-j6xg-2j72

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:qwik:qwik::::::::	—	—	QwikDev

cpe:2.3:a:qwik:qwik:*:*:*:*:*:*:*:* Versions — — ·QwikDev

Remediation

Fix · CNA qwik (QwikDev) Fixed in 1.13.0
Fix · GHSA-qr9h-j6xg-2j72 @builder.io/qwik-city (npm) Fixed in 1.13.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2025-53620
2026-10-03 Alias added: GHSA-qr9h-j6xg-2j72

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2025-53620

Other 4

TI-2023-01211 Code Injection in builderio/qwik CVSS 3.1CRITICAL 10.0
TI-2026-56751 gpt-crawler Arbitrary File Write via outputFileName Parameter CVSS 4.0HIGH 8.8
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-2026-62522 Builder.io Gen2 SDKs through 5.2.11 Prototype Pollution via builder.userAttributes CVSS 4.0MEDIUM 5.3

See all 15 →

Sources

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