XSS in Huginn
CVE-2026-123094
Huginn before 2026.11.05 contains a stored cross-site scripting vulnerability in the service_label helper that marks unescaped OAuth service display names as html_safe. Authenticated attackers can connect an OAuth account with a crafted nickname, name or email and share it globally, executing JavaScript when victims attach it to Agents and view them, exposing Credentials, Agents and Events, and admin actions if the victim is an administrator.
Vulnerability class: XSS (Cross-Site Scripting)
Published .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/huginn/huginn (product)
- github.com/huginn/huginn/blob/v2026.11.01/app/helpers/application_helper.rb (technical-description)
- github.com/huginn/huginn/commit/92229a5e7343bfffc740d31e42b9654b212b678b (patch)
- huginn v2026.11.05 Release Notes (release-notes)
- GitHub Security Advisory (GHSA-rjw9-xx87-f2ww) (vendor-advisory)
- hackmd.io/@leediay/SJtUoLFTfx (third-party-advisory)
- VulnCheck Advisory: Huginn before 2026.11.05 Stored XSS via OAuth Service Display Name (third-party-advisory)
Frequently asked questions
- What is CVE-2026-123094?
- CVE-2026-123094 is a medium-severity vulnerability in Huginn, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-11-05.
- How severe is CVE-2026-123094?
- Medium severity. CVSS v3 base score is 5.4 out of 10.