# CVE-2025-63499: Alinto Sogo 5.12.3 is vulnerable to Cross Site Scripting (XSS) via the theme parameter.

Source: https://junglewise.ai/threats/cve-2025-63499-alinto-sogo-5-12-3-is-vulnerable-to-cross-site-scripting-xss-via  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-12-04  
License: CC BY 4.0 with a link back

CVE-2025-63499 · Severity: medium · CVSS 6.1 · Published 2025-12-04

Alinto Sogo 5.12.3 is vulnerable to Cross Site Scripting (XSS) via the theme parameter.

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

## Quick answers

**Is CVE-2025-63499 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-63499 being exploited in the wild.

**How severe is CVE-2025-63499?** Medium severity, with a CVSS score of 6.1, published 4 December 2025.

**Which products and versions are affected?** Alinto Sogo. The advisory does not name versions.

**Is there a fix for CVE-2025-63499?** 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.

**Am I affected by CVE-2025-63499?** Check whether you run Alinto Sogo. 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.

## Affected products

- Alinto Sogo

## 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)