# CVE-2026-93453: SOGo before 5.12.11 Password Reset Token Interception via Origin Header

> Attackers can intercept password reset tokens by manipulating the Origin header, leading to account takeover in SOGo groupware.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 17 Sep 2026
- **Updated:** 18 Sep 2026
- **Also known as:** DEBIAN-CVE-2026-93453, GHSA-gqgv-6fx9-g8mx, MGASA-2026-0557, UBUNTU-CVE-2026-93453

## What is CVE-2026-93453?

CVE-2026-93453 is a high-severity vulnerability in Alinto SOGo, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

SOGo before 5.12.11 constructs password-reset links using the client-supplied Origin header as the authority, allowing unauthenticated attackers to redirect recovery tokens to attacker-controlled domains. Attackers can submit password recovery requests with a malicious Origin header to have valid password-reset tokens mailed to victim recovery addresses within links pointing to attacker infrastructure, enabling account takeover.

Weakness: CWE-640 (Weak Password Recovery Mechanism for Forgotten Password)

## Which versions are affected by CVE-2026-93453?


## How do I fix CVE-2026-93453?

Upgrade to a fixed version.

## Is CVE-2026-93453 being exploited?

There is no known exploitation of CVE-2026-93453 in the wild and no public exploit code.

Public exploit code:

- CVE-2026-93453 Exploit — SOGo password reset link poisoning via attacker-controlled Origin header, enabling password reset token interception and account takeover. (github_poc): https://github.com/Faceless0x7/CVE-2026-93453

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-93453 and fix it if it is affected.

What it is: CVE-2026-93453 is a high-severity vulnerability in Alinto SOGo, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-93453 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-2026-93453/ (Markdown: https://insights.sbomify.com/CVE-2026-93453/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-93453
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-93453
- OSV: https://osv.dev/vulnerability/CVE-2026-93453

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-93453/
Summaries are generated and may contain mistakes; the official description above is the record.