All vulnerabilities
CVE-2026-113712GHSA-x397-5hrv-j9m9

cachethq/cachet: Cachet has Stored XSS in Incident Component

cachethq cachethq/cachetcomposerLibraries & packages
Open in ThreatlineRecord JSON
CVSS
4.8Medium
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 23 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.36%Chance of exploitation activity in the next 30 days, higher than 28% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published20 Oct 2026Updated 23 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Description

Summary

A stored Cross-Site Scripting (XSS) vulnerability exists in the incident creation form, allowing an authenticated attacker to inject malicious HTML/JavaScript that executes in the browser of any user who views the status page, potentially leading to session token theft and account takeover.

Details

The incident Name and Message fields do not properly sanitize HTML event handler attributes. While <script> tags appear to be filtered, event-based payloads are not blocked.

Affected endpoint: /dashboard/incidents/ Affected fields: Incident Name, Incident Message Affected version: Cachet v3

PoC

  1. Log in as an authenticated user
  2. Navigate to /dashboard/incidents/
  3. Create a new incident
  4. Insert the following payloads in the Name and Message field:

Payload 1 — Confirm XSS execution:

Step 2 — Cookie/token exfiltration:

Step 3 — Forced redirect to sensitive page:

5. Save the incident
6. Navigate to the public status page
7. Payload executes in the victim's browser
### Payload 1 
<img width="1926" height="1062" alt="Screenshot_2026-05-05_21_19_21" src="https://github.com/user-attachments/assets/3ec50987-332d-4ba2-8fd2-b18ccc8d8f6b" />

### Payload 2
<img width="1910" height="525" alt="Screenshot_2026-05-07_12_22_07" src="https://github.com/user-attachments/assets/3b34170d-a2f0-4962-9e20-1fc8e305c589" />



Stored XSS affecting all users who view the public status page.

An attacker can:
- Confirm script execution via alert popup
- Steal session cookies and XSRF tokens from authenticated users
- Silently redirect victims to sensitive pages like `/dashboard/manage-customization`

This vulnerability could lead to full account takeover of any user who views the status page, including administrators.

Text from GitHub Advisory Database

Affected versions 53

  • cachethq/cachet, composer<= 2.4.1GitHub
  • cachetaffected: <= 2.4.1CVE List
  • cachethq/cachet, Packagistfrom first release, through 2.4.1OSV
  • cachethq/cachet, Packagistv0.1.0-alphaOSV
  • cachethq/cachet, Packagistv1.0.0OSV
  • cachethq/cachet, Packagistv1.1.0OSV
  • cachethq/cachet, Packagistv1.1.1OSV
  • cachethq/cachet, Packagistv1.2.0OSV
  • cachethq/cachet, Packagistv1.2.1OSV
  • cachethq/cachet, Packagistv2.0.0OSV
  • cachethq/cachet, Packagistv2.0.0-RC1OSV
  • cachethq/cachet, Packagistv2.0.0-RC2OSV
  • cachethq/cachet, Packagistv2.0.0-RC3OSV
  • cachethq/cachet, Packagistv2.0.0-RC4OSV
  • cachethq/cachet, Packagistv2.0.0-RC5OSV
  • cachethq/cachet, Packagistv2.0.0-beta1OSV
  • cachethq/cachet, Packagistv2.0.0-beta2OSV
  • cachethq/cachet, Packagistv2.0.1OSV
  • cachethq/cachet, Packagistv2.0.2OSV
  • cachethq/cachet, Packagistv2.0.3OSV
  • cachethq/cachet, Packagistv2.0.4OSV
  • cachethq/cachet, Packagistv2.1.0OSV
  • cachethq/cachet, Packagistv2.1.0-RC1OSV
  • cachethq/cachet, Packagistv2.1.0-RC2OSV
  • cachethq/cachet, Packagistv2.1.1OSV
  • cachethq/cachet, Packagistv2.1.2OSV
  • cachethq/cachet, Packagistv2.2.0OSV
  • cachethq/cachet, Packagistv2.2.0-RC1OSV
  • cachethq/cachet, Packagistv2.2.1OSV
  • cachethq/cachet, Packagistv2.2.2OSV
  • cachethq/cachet, Packagistv2.2.3OSV
  • cachethq/cachet, Packagistv2.2.4OSV
  • cachethq/cachet, Packagistv2.3.0OSV
  • cachethq/cachet, Packagistv2.3.0-RC1OSV
  • cachethq/cachet, Packagistv2.3.0-RC2OSV
  • cachethq/cachet, Packagistv2.3.0-RC3OSV
  • cachethq/cachet, Packagistv2.3.0-RC4OSV
  • cachethq/cachet, Packagistv2.3.0-RC5OSV
  • cachethq/cachet, Packagistv2.3.0-RC6OSV
  • cachethq/cachet, Packagistv2.3.1OSV
  • cachethq/cachet, Packagistv2.3.10OSV
  • cachethq/cachet, Packagistv2.3.11OSV
  • cachethq/cachet, Packagistv2.3.12OSV
  • cachethq/cachet, Packagistv2.3.13OSV
  • cachethq/cachet, Packagistv2.3.14OSV
  • cachethq/cachet, Packagistv2.3.15OSV
  • cachethq/cachet, Packagistv2.3.16OSV
  • cachethq/cachet, Packagistv2.3.17OSV
  • cachethq/cachet, Packagistv2.3.18OSV
  • cachethq/cachet, Packagistv2.3.2OSV
  • cachethq/cachet, Packagistv2.3.3OSV
  • cachethq/cachet, Packagistv2.3.4OSV
  • cachethq/cachet, Packagistv2.3.5OSV

References 4