CVE-2026-25811
📋 TL;DR
PlaciPy placement management system version 1.0.0 allows cross-tenant data access by deriving tenant identifiers from user-provided email domains without validating domain ownership. This vulnerability enables unauthorized access to data across different educational institution tenants. All users of PlaciPy 1.0.0 are affected.
💻 Affected Systems
- PlaciPy
📦 What is this software?
Placipy by Prasklatechnology
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all tenant data, allowing attackers to access, modify, or delete sensitive student placement information across all institutions using the system.
Likely Case
Unauthorized viewing of cross-tenant placement data, potentially exposing student records, institutional arrangements, and confidential educational information.
If Mitigated
Limited exposure if proper domain validation is implemented, restricting users to their legitimate tenant scope.
🎯 Exploit Status
Exploitation requires a valid user account but is technically simple - attackers can modify email domain to access other tenants.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check GitHub advisory for latest patched version
Vendor Advisory: https://github.com/Praskla-Technology/assessment-placipy/security/advisories/GHSA-3gmm-9ww2-87fh
Restart Required: Yes
Instructions:
1. Review GitHub security advisory for patched version. 2. Update PlaciPy to latest patched version. 3. Restart application services. 4. Verify domain validation is properly implemented.
🔧 Temporary Workarounds
Implement domain validation middleware
allAdd server-side validation to verify domain ownership before tenant assignment
# Custom implementation required based on framework
Restrict email domain patterns
allImplement strict email domain validation and tenant mapping
# Configuration changes in authentication module
🧯 If You Can't Patch
- Implement network segmentation to isolate PlaciPy instances per tenant
- Deploy WAF rules to detect and block suspicious cross-tenant access patterns
🔍 How to Verify
Check if Vulnerable:
Test if changing email domain in user registration/login allows access to different tenant data without proper validation.Check Version:
Check PlaciPy version in application interface or configuration filesVerify Fix Applied:
Verify that domain validation occurs and cross-tenant access is properly restricted after update.📡 Detection & Monitoring
Log Indicators:
- Multiple tenant access attempts from single user account
- Unusual domain patterns in authentication logs
- Cross-tenant API calls
Network Indicators:
- Unusual data access patterns across tenant boundaries
- Authentication requests with mismatched domain-tenant mappings
SIEM Query:
source="placipy" AND (event="tenant_access" OR event="auth") | stats count by user, tenant | where count>1