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Response snapshot Oct 27, 2026, 00:07 UTC

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VulnerabilityCVE-2026-113712

Cachet has Stored XSS in Incident Component

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

At a glance

Exploited
Not known
Severity
4.8 Medium (CVSS 4.0)
Chance of exploitation
0.5% in the next 30 days
Sources
1 source

What to do

Consult the exact GitHub advisory for affected versions, mitigation, and patch availability.

Read GitHub-reviewed advisory GHSA-x397-5hrv-j9m9 (opens a new tab)

What happened

### 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 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

Continue reading

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

### Payload 2

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.

Affected package ranges reported by GitHub: cachethq/cachet: <= 2.4.1

Scores and how they were measured

CVSS base severity

4.8

Version 4.0As of

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

0.5%

Scored Percentile 39.6%

Model and measurement source (opens a new tab)

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Related technology

Sources

  1. Primary source

    GitHub-reviewed advisory GHSA-x397-5hrv-j9m9 (opens a new tab)

    The public advisory supplies the description, affected package/version ranges, and any listed CVSS metric. GitHub review is not local review.

    Published Checked

  2. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-x397-5hrv-j9m9, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

  3. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-x397-5hrv-j9m9, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

  4. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-x397-5hrv-j9m9, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

  5. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-x397-5hrv-j9m9, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

  6. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-x397-5hrv-j9m9, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

  7. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-x397-5hrv-j9m9, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

  8. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-x397-5hrv-j9m9, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

  9. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-x397-5hrv-j9m9, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

  10. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-x397-5hrv-j9m9, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

  11. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-x397-5hrv-j9m9, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

  12. Primary source

    FIRST measured EPSS score (opens a new tab)

    Measured EPSS probability and percentile for CVE-2026-113712, scored 2026-10-26. This is a model estimate, not proof of exposure.

    Published Checked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, October 20). Cachet has Stored XSS in Incident Component (CVE-2026-113712). https://kevwire.com/record/CVE-2026-113712

MLA

"Cachet has Stored XSS in Incident Component (CVE-2026-113712)." KEVWire, 20 Oct. 2026, kevwire.com/record/CVE-2026-113712.

Chicago

KEVWire. "Cachet has Stored XSS in Incident Component (CVE-2026-113712)." Last modified October 20, 2026. https://kevwire.com/record/CVE-2026-113712.

Evidence summary (plain text)

Cachet has Stored XSS in Incident Component (Oct 20, 2026).
Affected endpoint: /dashboard/incidents/
Affected fields: Incident Name, Incident Message
Affected version: Cachet v3

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:
CVSS 4.8 (version 4.0; evidence as of Oct 20, 2026; https://github.com/advisories/GHSA-x397-5hrv-j9m9).
EPSS 0.5% for the following 30 days, scored Oct 26, 2026 (https://api.first.org/data/v1/epss?cve=CVE-2026-113712&date=2026-10-26).
Sources:
GitHub-reviewed advisory GHSA-x397-5hrv-j9m9: https://github.com/advisories/GHSA-x397-5hrv-j9m9
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc&after=Y3Vyc29yOnYyOpK0MjAyNi0xMC0yMlQxNTo1Mjo1NlrOAAfxiA%3D%3D
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc&after=Y3Vyc29yOnYyOpK0MjAyNi0xMC0yMlQxNDowNjoxNFrOAAfxZw%3D%3D
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc&after=Y3Vyc29yOnYyOpK0MjAyNi0xMC0yMlQwODoyNzoyM1rOAAYp9A%3D%3D
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc&after=Y3Vyc29yOnYyOpK0MjAyNi0xMC0yMVQyMTozNTo1OFrOAAfwCQ%3D%3D
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc&after=Y3Vyc29yOnYyOpK0MjAyNi0xMC0yMVQyMTozMDoxM1rOAAfv2A%3D%3D
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc&after=Y3Vyc29yOnYyOpK0MjAyNi0xMC0yMVQyMToyODowOVrOAAfv1g%3D%3D
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc&after=Y3Vyc29yOnYyOpK0MjAyNi0xMC0yMVQyMToyNDoyMFrOAAfv1Q%3D%3D
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc&after=Y3Vyc29yOnYyOpK0MjAyNi0xMC0yMVQyMDo0NTowN1rOAAfvzQ%3D%3D
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc&after=Y3Vyc29yOnYyOpK0MjAyNi0xMC0yMVQyMDozMDoyNlrOAAfvxw%3D%3D
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc&after=Y3Vyc29yOnYyOpK0MjAyNi0xMC0yMVQyMDowMzo1N1rOAAfvxQ%3D%3D
FIRST measured EPSS score: https://api.first.org/data/v1/epss?cve=CVE-2026-113712&date=2026-10-26
Record ID: CVE-2026-113712.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Oct 26, 2026, 19:40 UTC. Ingestion is not an independent editorial investigation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

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Record details

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