CVE-2026-49345 Mercator CVE Configuration Vulnerable to Server-Side Request Forgery (SSRF)
Authenticated attackers can exploit SSRF in Mercator to scan internal networks and potentially achieve remote code execution via unauthenticated internal services.
- 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-2026-49345?
CVE-2026-49345 is a medium-severity server-side request forgery vulnerability in sourcentis mercator, published on 19 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Mercator is an open source web application that enables mapping of the information system. Prior to version 2025.05.19, a Server-Side Request Forgery (SSRF) vulnerability exists in Mercator's CVE configuration panel (`/admin/config/parameters`). The `testProvider()` method in `ConfigurationController` passes user-supplied input directly to `curl_init()` without validating the scheme, hostname, or destination IP address. An authenticated user with the `configure` permission can force the Mercator server to issue arbitrary outbound network requests. The suffix `/api/dbInfo` appended to the URL can be bypassed by injecting a `#` fragment character (e.g. `http://TARGET/PATH#`), allowing full control over the target URL. No scheme whitelist, host whitelist, or private/loopback IP block is applied. The `telnet://` scheme can be used for internal port scanning; the `gopher://` scheme enables interaction with unauthenticated internal services (Redis, Memcached), potentially leading to Remote Code Execution under specific deployment conditions. Version 2025.05.19 patches the issue.
Weakness: CWE-918
Which versions are affected by CVE-2026-49345?
How do I fix CVE-2026-49345?
No fix has been published for CVE-2026-49345 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-49345 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-49345 exists.