# CVE-2026-95754: MISP: Disabled-user check ineffective in pre-authentication TOTP login branch

> Disabled users with TOTP enabled could bypass initial rejection, receiving a TOTP prompt instead of immediate denial, though final authentication still failed.

- **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-w52q-73m7-hm7j

## What is CVE-2026-95754?

CVE-2026-95754 is a medium-severity authentication bypass 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

In MISP's UsersController login() method, the pre-authentication database query used for the TOTP (two-factor authentication) verification branch did not include the User.disabled column in its SELECT fields list. The query selected only User.password, User.totp, and User.hotp_counter. When the TOTP branch subsequently accessed $unauth_user['User']['disabled'], the key was absent from the result set, producing a PHP 'Undefined array key' warning and causing the expression to evaluate as null (falsy). As a result, the disabled-user guard in the TOTP branch was effectively a no-op: a disabled, TOTP-enrolled user could proceed to the TOTP verification step rather than being rejected at that point. 

The commit message explicitly states this was 'harmless in practice' because the subsequent identify() call re-validates the user and would still reject a disabled account. 

The practical security impact is therefore minimal, limited to a very small information-disclosure difference in the login response (a TOTP prompt is presented instead of an immediate rejection) and a PHP warning in application logs.

Weakness: CWE-285 (Improper Authorization)

## Which versions are affected by CVE-2026-95754?


## How do I fix CVE-2026-95754?

No fix has been published for CVE-2026-95754 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-95754 being exploited?

There is no known exploitation of CVE-2026-95754 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-95754 and fix it if it is affected.

What it is: CVE-2026-95754 is a medium-severity authentication bypass 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-2026-95754 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-2026-95754/ (Markdown: https://insights.sbomify.com/CVE-2026-95754/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-95754
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-95754
- OSV: https://osv.dev/vulnerability/CVE-2026-95754

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-95754/
Summaries are generated and may contain mistakes; the official description above is the record.