CVE-2026-71291Network attack vector

Authenticated remote code execution via unsandboxed Twig rendering

Published Aug 5, 2026 · Updated Aug 5, 2026

Server-side template injection in Bolt Core 6.1 and earlier allows remote authenticated users to execute OS commands through content fields. Field::getTwigValue compiles raw allow_twig field data with the application Twig environment and renders it without sandbox restrictions. A standard editor with permission to edit the default pages content field can run commands as the web server account when that content is rendered.

CVSS severity8.8
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side template injection in Bolt Core 6.1 and earlier allows remote authenticated users to execute OS commands through content fields. Field::getTwigValue compiles raw allow_twig field data with the application Twig environment and renders it without sandbox restrictions. A standard editor with permission to edit the default pages content field can run commands as the web server account when that content is rendered.

The record

CVE
CVE-2026-71291
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
Bolt CMS
Product
Bolt Core
Classifications
CWE-1336, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Bolt CMS · Bolt Coreversion=0 <=6.1

Published CVSS scores

8.8TuranSecCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1336Improper Neutralization of Special Elements Used in a Template Engine
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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