CVE-2026-59233 Missing Authorization in Prospero Flow CRM permission save endpoint allows privilege escalation
An authenticated user can escalate privileges by granting themselves full application permissions via an unprotected endpoint in Prospero Flow CRM.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-59233?
CVE-2026-59233 is a high-severity missing authorization vulnerability in Roskus Prospero Flow CRM, published on 10 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Missing Authorization in the permission management component in Roskus Prospero Flow CRM before 5.2.1 allows any authenticated user to grant any role, including their own, the complete set of application permissions via a crafted POST request to the permission save endpoint, which performs no authorization check before synchronizing the submitted permissions to the specified role.
Weakness: CWE-639
Which versions are affected by CVE-2026-59233?
How do I fix CVE-2026-59233?
No fix has been published for CVE-2026-59233 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-59233 being exploited?
There is no known exploitation of CVE-2026-59233 in the wild and no public exploit code.
Sources
Also known as GHSA-4fxp-2m36-qv64.