---
id: "CVE-2026-117679"
kind: "vulnerability"
aliases: ["CVE-2026-117679"]
title: "SHIRASAGI: authenticated user can run scripts in other users' browsers"
severity: "medium"
cvss: 5.4
epss: 0.00139
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["cms", "other", "self-hosted", "shirasagi"]
not_affected_if: ["auth-required"]
published_at: "2026-11-05T09:17:04+00:00"
first_seen_at: "2026-11-05T09:38:09+00:00"
updated_at: "2026-11-05T18:37:38+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-117679", "first_seen_at": "2026-11-05T09:38:09+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-117679", "first_seen_at": "2026-11-05T18:37:38+00:00"}]
exploit_sources: [{"type": "epss", "score": 0.00139, "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-117679"}]
---

# SHIRASAGI: authenticated user can run scripts in other users' browsers

SHIRASAGI has a cross-site scripting flaw that lets a logged-in attacker run arbitrary script in a user's browser when that user visits a page of the affected product. The attacker gets the victim's browser session context, such as acting as the user inside the site.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-11-05T09:38:09+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-117679
- 2026-11-05T18:37:38+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-117679

## From the sources

A cross-site scripting vulnerability exists in SHIRASAGI, which may allow an authenticated attacker to execute arbitrary script in a user's web browser when the user accesses a website using the affected product.

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