Vulnerability · Published Aug 24, 2026 · Assigned by Secur0
CVE-2026-78337Unrestricted upload of file with dangerous type in Prospero Flow CRM allows stored cross-site scripting via SVG
Medium 4.8
In plain English
A medium-severity unrestricted file upload in Prospero Flow CRM from Roskus. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).
Severity (CVSS 4.0)4.8Medium
Exploit odds (30 days)0.4%top 65.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Unrestricted Upload of File with Dangerous Type in the company logo upload in Roskus Prospero Flow CRM before 5.15.13 allows an authenticated user holding the create company and update company permissions to execute arbitrary JavaScript in the application origin via an SVG document containing an embedded script element.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Roskus | Prospero Flow CRM | 0 – before 5.15.13 |
Weakness: CWE-434 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
References
- https://github.com/Roskus/prospero-flow-crm/commit/aaa4fc76bf039d5011884b86b8f29ddd50d17b17 patch
- https://secur0.com/en/cna/cve-list/cve-2026-78337-unrestricted-upload-company-logo-svg-xss third-party-advisory, technical-description