CVE-2026-32701
published 2026-03-20CVE-2026-32701: Qwik is a performance-focused JavaScript framework. Versions prior to 1.19.2 improperly inferred arrays from dotted form field names during FormData parsing…
PriorityP342high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.43%
34.2th percentile
Qwik is a performance-focused JavaScript framework. Versions prior to 1.19.2 improperly inferred arrays from dotted form field names during FormData parsing. By submitting mixed array-index and object-property keys for the same path, an attacker could cause user-controlled properties to be written onto values that application code expected to be arrays. When processing application/x-www-form-urlencoded or multipart/form-data requests, Qwik City converted dotted field names (e.g., items.0, items.1) into nested structures. If a path was interpreted as an array, additional attacker-supplied keys on that path—such as items.toString, items.push, items.valueOf, or items.length—could alter the resulting server-side value in unexpected ways, potentially leading to request handling failures, denial of service through malformed array state or oversized lengths, and type confusion in downstream code. This issue was fixed in version 1.19.2.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| builder.io | qwik-city | >= 0 < 1.19.2 | 1.19.2 |
| qwik | qwik | < 1.19.2 | 1.19.2 |
| qwikdev | qwik | < 1.19.2 | 1.19.2 |
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
OSV
Qwik City has array method pollution in FormData processing allows type confusion and DoS
osv·2026-03-20
CVE-2026-32701 [HIGH] Qwik City has array method pollution in FormData processing allows type confusion and DoS
Qwik City has array method pollution in FormData processing allows type confusion and DoS
**Summary**
Qwik City improperly inferred arrays from dotted form field names during `FormData` parsing. By submitting mixed array-index and object-property keys for the same path, an attacker could cause user-controlled properties to be written onto values that application code expected to be arrays.
**Description**
When processing `application/x-www-form-urlencoded` or `multipart/form-data` requests, Qwik City converted dotted field names such as `items.0` and `items.1` into nested structures. If a path was interpreted as an array, additional attacker-controlled keys on the same path, such as `items.toString`, `items.push`, `items.valueOf`, or `items.length`, could alter the resulting server-sid
GHSA
Qwik City has array method pollution in FormData processing allows type confusion and DoS
ghsa·2026-03-20
CVE-2026-32701 [HIGH] CWE-843 Qwik City has array method pollution in FormData processing allows type confusion and DoS
Qwik City has array method pollution in FormData processing allows type confusion and DoS
**Summary**
Qwik City improperly inferred arrays from dotted form field names during `FormData` parsing. By submitting mixed array-index and object-property keys for the same path, an attacker could cause user-controlled properties to be written onto values that application code expected to be arrays.
**Description**
When processing `application/x-www-form-urlencoded` or `multipart/form-data` requests, Qwik City converted dotted field names such as `items.0` and `items.1` into nested structures. If a path was interpreted as an array, additional attacker-controlled keys on the same path, such as `items.toString`, `items.push`, `items.valueOf`, or `items.length`, could alter the resulting server-sid
No detection rules found.
No public exploits indexed.
2026-03-20
Published