CachetHQ Cachet up to 2.4.1 Incident Template Rendering special elements used in a template engine

Summaryinfo

A vulnerability identified as critical has been detected in CachetHQ Cachet up to 2.4.1. Affected by this vulnerability is an unknown functionality of the component Incident Template Rendering. The manipulation leads to improper neutralization of special elements used in a template engine. This vulnerability is listed as CVE-2026-69118. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, has been found in CachetHQ Cachet up to 2.4.1. This issue affects some unknown functionality of the component Incident Template Rendering. The manipulation with an unknown input leads to a improper neutralization of special elements used in a template engine vulnerability. Using CWE to declare the problem leads to CWE-1336. The product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Cachet through 2.4.1 contains a server-side template injection vulnerability in incident template rendering that allows authenticated users to execute arbitrary PHP code. Attackers can create malicious incident templates with Blade directives or Twig filters that execute system commands when incidents are created, achieving remote code execution as the web server process.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-69118 since 08/03/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/10/2026). MITRE ATT&CK project uses the attack technique T1221 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• CachetHQ

Name

• Cachet

Version

• 2.4.0
• 2.4.1

Website

• Product: https://github.com/cachethq/cachet/

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