# CVE-2026-95679: MISP Unauthenticated Blind SSRF via XML Body Processing

> Unauthenticated attackers can trigger blind SSRF via crafted XML bodies, allowing internal network probing and reconnaissance on MISP servers.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Sep 2026
- **Updated:** 22 Sep 2026
- **Also known as:** GHSA-95gm-v6rp-cf52

## What is CVE-2026-95679?

CVE-2026-95679 is a medium-severity server-side request forgery vulnerability in MISP, published on 22 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

MISP's RequestHandlerComponent automatically decodes XML request bodies on all write requests. The underlying Xml::build() library contains a logic error in its readFile guard condition (readFile && http || https), where PHP operator precedence causes the https branch to bypass the readFile check entirely. As a result, a request body containing a bare HTTPS URL is treated as a locator and fetched by the server. Because the cspReport endpoint accepts XML content type and is unauthenticated by design, an unauthenticated remote attacker can send a POST request with a crafted XML body to cause the MISP server to issue an outbound HTTPS request to an arbitrary target reachable from the server.

The attacker does not receive the response body, but can use the vulnerability to probe internal services, trigger actions on internal HTTPS endpoints, or perform timing-based reconnaissance of the server's network environment. 

The vulnerability affects any MISP deployment where the cspReport endpoint is reachable and the server has network access to internal or external HTTPS services.

Weakness: CWE-918 (Server-Side Request Forgery), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2026-95679?


## How do I fix CVE-2026-95679?

No fix has been published for CVE-2026-95679 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-95679 being exploited?

There is no known exploitation of CVE-2026-95679 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-95679 and fix it if it is affected.

What it is: CVE-2026-95679 is a medium-severity server-side request forgery vulnerability in MISP, published on 22 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-95679 in the wild and no public exploit code.

Affected product: MISP. 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-2026-95679/ (Markdown: https://insights.sbomify.com/CVE-2026-95679/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-95679
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-95679
- OSV: https://osv.dev/vulnerability/CVE-2026-95679

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-95679/
Summaries are generated and may contain mistakes; the official description above is the record.