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CVE-2026-25150

Qwik authentication bypass

9.3 CRITICALEPSS 0.72%
  1. Published3 Feb 2026

Description

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 sending crafted HTTP POST requests, potentially leading to privilege escalation, authentication bypass, or denial of service. This issue has been patched in version 1.19.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityNone
IntegrityHigh
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:L

Affected products

Qwik< 1.19.0

Remediation

Fixed in
Qwik≥ 1.19.0

References

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Frequently asked

Is CVE-2026-25150 being actively exploited?

CVE-2026-25150 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.72%.

How severe is CVE-2026-25150?

CVE-2026-25150 has a CVSS 3.1 base score of 9.3, rated critical. EPSS estimates a 0.72% probability of exploitation.

Which products are affected by CVE-2026-25150?

Affected products include Qwik.

How do I fix CVE-2026-25150?

Upgrade affected software to a fixed version, for example Qwik 1.19.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-25150 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.