# CVE-2026-19539: IDOR in Prospero Flow CRM allows cross-tenant ticket read, hijacking, and deletion

> Authenticated users can read, modify, or delete tickets from other companies due to missing authorization checks in the ticket management component.

- **Severity:** High 8.6 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Aug 2026
- **Updated:** 12 Aug 2026
- **Also known as:** GHSA-2wg2-5v89-cgh7

## What is CVE-2026-19539?

CVE-2026-19539 is a high-severity missing authorization vulnerability in Roskus Prospero Flow CRM, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Authorization Bypass Through User-Controlled Key in the ticket management component in Roskus Prospero Flow CRM before 5.4.9 allows authenticated users of any company to read the full content (title, description, and attachments) of tickets belonging to another company, to hijack another company's tickets by reassigning their company_id, and to delete another company's tickets without any authorization check, via the ticket's numeric identifier, because the read and save operations retrieve the record without constraining the query to the authenticated user's company, and the delete controller type-hints a generic Illuminate\Http\Request instead of the TicketDeleteRequest that would enforce the required permission.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-19539?


## How do I fix CVE-2026-19539?

No fix has been published for CVE-2026-19539 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-19539 being exploited?

There is no known exploitation of CVE-2026-19539 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-19539 and fix it if it is affected.

What it is: CVE-2026-19539 is a high-severity missing authorization vulnerability in Roskus Prospero Flow CRM, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-19539 in the wild and no public exploit code.

Affected product: Roskus Prospero Flow CRM. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-19539/ (Markdown: https://insights.sbomify.com/CVE-2026-19539/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-19539
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-19539
- OSV: https://osv.dev/vulnerability/CVE-2026-19539

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-19539/
Summaries are generated and may contain mistakes; the official description above is the record.