CVE-2026-2819
📋 TL;DR
This vulnerability allows remote attackers to delete workflow instances without proper authorization in Dromara RuoYi-Vue-Plus. It affects systems running the workflow module up to version 5.5.3. Attackers can exploit this to disrupt business processes by deleting critical workflow data.
💻 Affected Systems
- Dromara RuoYi-Vue-Plus
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Critical business workflows are deleted, causing operational disruption, data loss, and potential compliance violations.
Likely Case
Unauthorized deletion of workflow instances leading to business process interruptions and data integrity issues.
If Mitigated
Limited impact with proper network segmentation and access controls preventing unauthorized access.
🎯 Exploit Status
Exploit is publicly available and requires some authentication but bypasses authorization checks.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown - vendor did not respond to disclosure
Vendor Advisory: None available
Restart Required: Yes
Instructions:
1. Monitor vendor channels for updates. 2. Upgrade to version above 5.5.3 when available. 3. Restart application after patching.
🔧 Temporary Workarounds
Disable workflow module
allTemporarily disable the vulnerable workflow module if not essential
Modify application configuration to disable workflow module
Network access restriction
allRestrict access to the vulnerable endpoint
Add firewall rule to block /workflow/instance/deleteByInstanceIds
🧯 If You Can't Patch
- Implement strict network segmentation to isolate the application
- Deploy web application firewall (WAF) with rules to block unauthorized delete requests
🔍 How to Verify
Check if Vulnerable:
Check application version and verify if /workflow/instance/deleteByInstanceIds endpoint is accessible without proper authorizationCheck Version:
Check application configuration or version file for RuoYi-Vue-Plus versionVerify Fix Applied:
Test if unauthorized delete requests to the endpoint are properly rejected after implementing controls📡 Detection & Monitoring
Log Indicators:
- Unauthorized DELETE requests to /workflow/instance/deleteByInstanceIds
- Multiple workflow instance deletions from single source
Network Indicators:
- HTTP DELETE requests to vulnerable endpoint without proper authorization headers
SIEM Query:
source_ip=* AND http_method=DELETE AND url_path="/workflow/instance/deleteByInstanceIds" AND NOT auth_success=true