# CVE-2026-94374: Missing authorization in MISP

> Authenticated users can overwrite or read other events' reports by manipulating report IDs during module result processing.

- **Severity:** High 8.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:H/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:** 21 Sep 2026
- **Updated:** 21 Sep 2026
- **Also known as:** GHSA-qg5m-5m7w-mf5x

## What is CVE-2026-94374?

CVE-2026-94374 is a high-severity missing authorization vulnerability in MISP, published on 21 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

MISP contains an insecure direct object reference vulnerability in the processModuleResultsData method of the Event model. When processing module results, the code iterates over EventReport entries supplied in the resolved data and saves each one. Unlike the adjacent attribute and object processing loops, the report loop did not unset the client-supplied 'id' field before calling save(). Because the MISP EventReport model's create() method does not strip the id field, an authenticated user with permission to submit module results could include an 'id' value referencing an existing report belonging to a different event. Upon save(), the ORM would update that existing row rather than insert a new one, allowing the attacker to 

 - read the content of another event's report by reparenting it into their own event
 - overwrite the report's fields with attacker-controlled data
 - change the report's event_id to redirect ownership. 

This constitutes an authorization bypass through a user-controlled key, enabling cross-event data disclosure and integrity compromise. The vulnerability requires an authenticated session with the ability to invoke module result processing on an event.

Version affected: <2.5.47

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key), CWE-472 (External Control of Assumed-Immutable Web Parameter)

## Which versions are affected by CVE-2026-94374?


## How do I fix CVE-2026-94374?

No fix has been published for CVE-2026-94374 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-94374 being exploited?

There is no known exploitation of CVE-2026-94374 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-94374 and fix it if it is affected.

What it is: CVE-2026-94374 is a high-severity missing authorization vulnerability in MISP, published on 21 Sep 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-2026-94374 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-2026-94374/ (Markdown: https://insights.sbomify.com/CVE-2026-94374/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-94374
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-94374
- OSV: https://osv.dev/vulnerability/CVE-2026-94374

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-94374/
Summaries are generated and may contain mistakes; the official description above is the record.