# CVE-2026-54357: MISP improper authorization allows organization administrators to modify site administrator user settings

> Organization administrators can improperly modify site administrator settings due to flawed access control checks, requiring a patch to enforce privilege boundaries.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Jun 2026
- **Updated:** 12 Jun 2026
- **Also known as:** GHSA-jfqf-9254-245v

## What is CVE-2026-54357?

CVE-2026-54357 is a medium-severity missing authorization vulnerability in misp, published on 12 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

An improper authorization vulnerability in MISP allowed an authenticated organization administrator to access or modify user settings belonging to site administrator accounts within the same organization. The affected access-control checks scoped administrative actions by organization membership but did not exclude higher-privileged site administrator users. As a result, an organization administrator could potentially view or alter site administrator user settings and related login profile information, crossing the intended privilege boundary between organization administration and site-wide administration.

The patch hardens the ACL logic by excluding site administrator accounts from organization administrator–managed user sets, adding explicit authorization failure when a target user is not administrable, and ensuring user setting and login profile operations fail closed.

Weakness: CWE-863 (Incorrect Authorization), CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-54357?


## How do I fix CVE-2026-54357?

No fix has been published for CVE-2026-54357 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-54357 being exploited?

There is no known exploitation of CVE-2026-54357 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-54357 and fix it if it is affected.

What it is: CVE-2026-54357 is a medium-severity missing authorization vulnerability in misp, published on 12 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-54357 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-2026-54357/ (Markdown: https://insights.sbomify.com/CVE-2026-54357/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-54357
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-54357
- OSV: https://osv.dev/vulnerability/CVE-2026-54357

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-54357/
Summaries are generated and may contain mistakes; the official description above is the record.