CSRF in Prospero Flow CRM order confirmation allows unauthorized order state changes
Summary
| CVE | CVE-2026-82911 |
|---|---|
| State | PUBLISHED |
| Assigner | Secur0 |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-04 16:18:16 UTC |
| Updated | 2026-09-04 20:17:30 UTC |
| Description | Cross-Site Request Forgery (CSRF) in the OrderConfirmController at GET /order/confirm/{order_number} in Roskus Prospero Flow CRM before 5.15.11 allows an unauthenticated attacker to confirm any order on behalf of an authenticated user by directing them to a crafted page. Laravel's VerifyCsrfToken middleware enforces CSRF tokens only on POST, PUT, PATCH, and DELETE requests; the Route::get declaration leaves this state-changing action unprotected. Session cookies configured with SameSite=Lax are automatically included in top-level cross-site navigation, so a single link click triggers OrderConfirmController::confirm() and transitions the target order from pending to confirmed without user authorization. Because order numbers are sequential integers, an attacker can enumerate and confirm all existing orders in a single automated sweep. |
Risk And Classification
Primary CVSS: v4.0 5.1 MEDIUM from 4daa8cea-433a-44bd-9456-53b127fc289a
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.001620000 probability, percentile 0.056450000 (date 2026-09-07)
Problem Types: CWE-352 | CWE-352 CWE-352 Cross-Site Request Forgery (CSRF)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | 4daa8cea-433a-44bd-9456-53b127fc289a | Secondary | 5.1 | MEDIUM | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/C... |
| 4.0 | CNA | CVSS | 5.1 | MEDIUM | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N |
CVSS v4.0 Breakdown
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Roskus | Prospero Flow CRM | affected 5.15.11 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/Roskus/prospero-flow-crm/commit/a90c0c8c | 4daa8cea-433a-44bd-9456-53b127fc289a | github.com | |
| secur0.com/en/cna/cve-list/cve-2026-82911-csrf-order-confirmation-prospe... | 4daa8cea-433a-44bd-9456-53b127fc289a | secur0.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Darío Chacón (en)
CNA: Mario Álvarez (en)
CNA: Darío Rivas Quero (en)
CNA: Cristian Fernández Cornejo (en)
CNA: Secur0 CNA (en)
CNA: Gustavo Novaro (en)
Additional Advisory Data
Solutions
CNA: Upgrade to 5.15.11 or later from the main branch; no tagged release carries the fix.