# CVE-2026-125871: MISP sourcecache module SSRF allows fetching arbitrary internal URLs via attribute enrichment


- **Severity:** Medium 6.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 10 Nov 2026
- **Updated:** 10 Nov 2026
- **Also known as:** GHSA-vmhf-j68f-c7h8

## What is CVE-2026-125871?

CVE-2026-125871 is a medium-severity vulnerability in misp-modules, published on 10 Nov 2026. 

### Official description

The sourcecache expansion module in MISP Modules (misp-modules) contains a Server-Side Request Forgery (SSRF) vulnerability. When a user with permission to create or modify attributes of type 'link' or 'url' submits an attribute value, the module passes the URL directly to its internal archiving function without any validation of the target address. An attacker can therefore craft a URL pointing to loopback addresses (e.g., 127.0.0.1), private network ranges, link-local addresses, or cloud metadata endpoints (e.g., 169.254.169.254). The MISP server will issue an HTTP request to that target and store the response body in the event, effectively exfiltrating data from internal services to the attacker through the MISP interface. Non-HTTP schemes such as file:// are also accepted, potentially allowing local file disclosure. The vulnerability requires an authenticated MISP user with the ability to create or edit attributes of the affected types. The security impact is information disclosure from internal services reachable by the MISP server, including sensitive data such as cloud credentials, internal application data, or local files.

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

## Which versions are affected by CVE-2026-125871?


## How do I fix CVE-2026-125871?

No fix has been published for CVE-2026-125871 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-125871 being exploited?

There is no known exploitation of CVE-2026-125871 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-125871 and fix it if it is affected.

What it is: CVE-2026-125871 is a medium-severity vulnerability in misp-modules, published on 10 Nov 2026. 
Exploitation: There is no known exploitation of CVE-2026-125871 in the wild and no public exploit code.

Affected product: misp-modules. 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-2026-125871/ (Markdown: https://insights.sbomify.com/CVE-2026-125871/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-125871
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-125871
- OSV: https://osv.dev/vulnerability/CVE-2026-125871

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-125871/
Summaries are generated and may contain mistakes; the official description above is the record.