# CVE-2026-79763: Termix: MFA-critical operations accept the account password as a sole factor (regression of CVE-2026-45749)

> Attackers with session and password can disable MFA or reset backup codes, bypassing two-factor authentication in Termix.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A: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:** 24 Sep 2026
- **Updated:** 24 Sep 2026
- **Also known as:** GHSA-x9h9-f7jc-8jwj

## What is CVE-2026-79763?

CVE-2026-79763 is a medium-severity authentication bypass vulnerability in Termix-SSH Termix, published on 24 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. From 2.4.0 until 2.5.1, the POST /users/totp/disable and POST /users/totp/backup-codes endpoints accept the account password as the sole reauthentication factor after a 2.4.0 refactor regressed the two-factor check introduced for CVE-2026-45749. In src/backend/database/routes/user-totp-routes.ts, verifyTotpReauth returns success when bcrypt.compare validates the password, while each endpoint chooses password or totp_code as an interchangeable credential. An attacker who has a victim's authenticated session and knows the password can disable TOTP or regenerate and invalidate backup codes without an authenticator or valid second factor, weakening the account to single-factor authentication. This issue is fixed in version 2.5.1.

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

## Which versions are affected by CVE-2026-79763?


## How do I fix CVE-2026-79763?

No fix has been published for CVE-2026-79763 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-79763 being exploited?

There is no known exploitation of CVE-2026-79763 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-79763 and fix it if it is affected.

What it is: CVE-2026-79763 is a medium-severity authentication bypass vulnerability in Termix-SSH Termix, published on 24 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-2026-79763 in the wild and no public exploit code.

Affected product: Termix-SSH Termix. 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-2026-79763/ (Markdown: https://insights.sbomify.com/CVE-2026-79763/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-79763
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-79763
- OSV: https://osv.dev/vulnerability/CVE-2026-79763

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-79763/
Summaries are generated and may contain mistakes; the official description above is the record.