# CVE-2026-33550: Weak cryptography in SOGo

> SOGo uses short OTPs and fails to renew them on toggle, weakening two-factor authentication security.

- **Severity:** Low 2.0 (`CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 22 Mar 2026
- **Updated:** 23 Mar 2026
- **Also known as:** DEBIAN-CVE-2026-33550, GHSA-9x6p-jf26-xmx7, UBUNTU-CVE-2026-33550

## What is CVE-2026-33550?

CVE-2026-33550 is a low-severity vulnerability in Alinto SOGo, published on 22 Mar 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

SOGo before 5.12.5 does not renew the OTP if a user disables/enables it, and has a too short length (only 12 digits instead of the 20 recommended).

Weakness: CWE-308 (Use of Single-factor Authentication)

## Which versions are affected by CVE-2026-33550?

It affects 1 product.


Products: Alinto Sogo.

## How do I fix CVE-2026-33550?

Upgrade to a fixed version.

## Is CVE-2026-33550 being exploited?

There is no known exploitation of CVE-2026-33550 in the wild and no public exploit code.

## Other vulnerabilities in Alinto SOGo

- [CVE-2015-5395](https://insights.sbomify.com/CVE-2015-5395/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2016-6188](https://insights.sbomify.com/CVE-2016-6188/): Denial of service in n/a (medium 6.5)
- [CVE-2025-71276](https://insights.sbomify.com/CVE-2025-71276/): Cross-site scripting in SOGo (medium 6.4)
- [CVE-2025-63499](https://insights.sbomify.com/CVE-2025-63499/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2025-63498](https://insights.sbomify.com/CVE-2025-63498/): Cross-site scripting in n/a (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-33550 and fix it if it is affected.

What it is: CVE-2026-33550 is a low-severity vulnerability in Alinto SOGo, published on 22 Mar 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-33550 in the wild and no public exploit code.

Affected product: Alinto SOGo. 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-2026-33550/ (Markdown: https://insights.sbomify.com/CVE-2026-33550/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-33550
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-33550
- OSV: https://osv.dev/vulnerability/CVE-2026-33550

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-33550/
Summaries are generated and may contain mistakes; the official description above is the record.