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CWE-942: Permissive Cross-domain Security Policy with Untrusted Domains
Weakness Summary
The product uses a web-client protection mechanism such as a Content Security Policy (CSP) or cross-domain policy file, but the policy includes untrusted domains with which the web client is allowed to communicate.
- Canonical source: MITRE CWE-942 (opens in a new tab)
- Published Atomicorp CVE observations: 2
- Distinct affected products in those observations: 2
- Active Atomicorp rules associated with this weakness: 11
Atomicorp Research Context
Atomicorp has published CVE-specific research observations associated with this weakness category. Each linked CVE page states whether the tested request was detected or blocked and is the authoritative customer-facing finding.
The CVEs and rules shown here are selected published examples, not a complete list of Atomicorp protections. If a CWE, CVE, or rule is absent from this page, no conclusion should be drawn about whether Atomicorp protects against that weakness or attack method.
A CWE describes a class of software weakness. It does not identify one exploit request, and association with a CWE does not mean that every vulnerability or exploitation path in that category is detected or blocked.
Selected Published CVE Observations
| CVE | Vulnerability | Product | Atomicorp finding | Observed rules |
|---|---|---|---|---|
| CVE-2026-34449 | SiYuan: Cross-Origin RCE via Permissive CORS Policy and JavaScript Snippet Injection | siyuan | Attack Blocked by Atomicorp | 340014 , 340023 , 340029 , 344360 , 344361 , 344363 , 344364 , 344366 , 344370 , 345240 , 393655 |
| CVE-2026-53649 | Joro: Unauthenticated Cross-Origin Plugin Upload Leads to RCE | joro | Attack Blocked by Atomicorp | 340014 , 340023 , 344360 , 344361 , 344363 , 344364 , 344366 , 344370 , 393655 |
Associated Atomicorp WAF Rules
| Rule | Status | Behavior |
|---|---|---|
| 340014 | Active | disruptive (deny) |
| 340023 | Active | disruptive (deny) |
| 340029 | Active | disruptive (deny) |
| 344360 | Active | disruptive (deny) |
| 344361 | Active | disruptive (deny) |
| 344363 | Active | disruptive (deny) |
| 344364 | Active | disruptive (deny) |
| 344366 | Active | disruptive (deny) |
| 344370 | Active | disruptive (deny) |
| 345240 | Active | disruptive (deny) |
| 393655 | Active | disruptive (deny) |