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TI-2026-22314 Aliases CVE-2026-27971GHSA-p9x5-jp3h-96mm

Qwik affected by unauthenticated RCE via server$ Deserialization

Priority MEDIUM 50CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-502.

Summary

Qwik is a performance focused javascript framework. qwik <=1.19.0 is vulnerable to RCE due to an unsafe deserialization vulnerability in the server$ RPC mechanism that allows any unauthenticated user to execute arbitrary code on the server with a single HTTP request. Affects any deployment where require() is available at runtime. This vulnerability is fixed in 1.19.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.05478 92nd percentileScored 2026-11-07
Fix Fixed qwik (QwikDev): 1.19.1@builder.io/qwik (npm): 1.19.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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 1.19.11.19.1Patch availableCNA
—@builder.io/qwik (npm)before 1.19.11.19.1Patch availableGHSA-p9x5-jp3h-96mm
  • qwik VendorQwikDev Affected before 1.19.1 Fixed in 1.19.1 Patch available CNA
  • @builder.io/qwik (npm) Vendor— Affected before 1.19.1 Fixed in 1.19.1 Patch available GHSA-p9x5-jp3h-96mm

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:qwik:qwik:*:*:*:*:*:node.js:*:*before 1.19.1VulnerableQwikDev
  • cpe:2.3:a:qwik:qwik:*:*:*:*:*:node.js:*:* Versions before 1.19.1 Vulnerable ·QwikDev

Remediation

  • Fix · CNA qwik (QwikDev) Fixed in 1.19.1
  • Fix · GHSA-p9x5-jp3h-96mm @builder.io/qwik (npm) Fixed in 1.19.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-27971
  2. 2026-10-03 Alias added: GHSA-p9x5-jp3h-96mm
  3. 2026-10-25 EPSS moved to the 90th–95th percentile

References

Advisory 2

Other 2

  • 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-2026-20312 Prototype Pollution via FormData Processing in Qwik City CVSS 3.1CRITICAL 10.0
  • TI-2026-25193 Qwik has array method pollution in FormData processing, allowing type confusion and DoS CVSS 3.1HIGH 7.5
See all 10 →

Sources

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