# 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.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/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:** 19 Jun 2026
- **Updated:** 22 Jun 2026

## 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 (Server-Side Request Forgery)

## 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.

## Is CVE-2026-49345 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-49345 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-49345 and fix it if it is affected.

What it is: 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-49345 exists.

Affected product: sourcentis mercator. 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-2026-49345/ (Markdown: https://insights.sbomify.com/CVE-2026-49345/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-49345
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-49345
- OSV: https://osv.dev/vulnerability/CVE-2026-49345

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-49345/
Summaries are generated and may contain mistakes; the official description above is the record.