# CVE-2026-93453: SOGo password-reset link injection via Origin header

Source: https://junglewise.ai/threats/cve-2026-93453-sogo-password-reset-link-injection-via-origin-header  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-18. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-93453 · Severity: high · CVSS 8.3 · Published 2026-09-18

SOGo is a groupware collaboration platform that provides email, calendar, and contact management for organizations. The application constructs password-reset links using an untrusted client-supplied Origin header, allowing unauthenticated attackers to craft malicious password-recovery requests that send legitimate password-reset tokens to attacker-controlled domains, enabling account takeover of any user account.

Technologies: [Alinto Sogo](https://junglewise.ai/threats/technologies/sogo). Vendors: [Alinto](https://junglewise.ai/threats/vendors/alinto).

## Quick answers

**Is CVE-2026-93453 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-93453 being exploited in the wild.

**How severe is CVE-2026-93453?** High severity, with a CVSS score of 8.3, published 18 September 2026.

**Which products and versions are affected?** Alinto Sogo before 5.12.11.

**Is there a fix for CVE-2026-93453?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-93453 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-93453?** Check whether you run Alinto Sogo at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an open redirect / header injection flaw in SOGo's password-reset token generation mechanism. During password recovery, the application constructs the password-reset URL using the Origin header supplied by the client without proper validation, allowing an attacker to inject an arbitrary domain. An unauthenticated attacker can submit a password-recovery request with a malicious Origin header; the legitimate password-reset token will then be emailed within a link pointing to the attacker's infrastructure. When the victim clicks the link, the token is leaked to the attacker, who can then reset the victim's password and gain full account access. The flaw affects SOGo versions before 5.12.11 and requires no authentication. A patch is available in version 5.12.11 and later.

## Affected products

- Alinto SOGo before 5.12.11

## Timeline

- 2026-09-18: disclosed

## References

- [https://github.com/Alinto/sogo](https://github.com/Alinto/sogo)
- [https://github.com/Alinto/sogo/blob/SOGo-5.12.10/UI/MainUI/SOGoRootPage.m](https://github.com/Alinto/sogo/blob/SOGo-5.12.10/UI/MainUI/SOGoRootPage.m)

## Related threats

- [SOGo server-side request forgery in Calendar web subscription](https://junglewise.ai/threats/cve-2026-127145-sogo-before-5-12-13-contains-a-server-side-request-forgery)
- [SOGo denial of service via IMAP greeting timeout](https://junglewise.ai/threats/cve-2026-127141-sogo-before-5-12-13-contains-a-denial-of-service-vulnerability)
- [SOGo Sieve script injection in notification address](https://junglewise.ai/threats/cve-2026-127135-sogo-before-5-12-13-contains-a-sieve-script-injection)
- [SOGo missing rate limiting in TOTP verification](https://junglewise.ai/threats/cve-2026-127131-sogo-before-5-12-13-contains-a-missing-rate-limiting)
- [SOGo improper cryptographic signature verification in S/MIME](https://junglewise.ai/threats/cve-2026-127121-sogo-before-5-12-13-contains-an-improper-cryptographic-signature)