CVE-2026-29053Public exploitNetwork attack vector

Server code execution via permissive theme path resolution

Published Mar 5, 2026 · Updated Mar 5, 2026

Code injection in Ghost 0.7.2 through 6.19.0 allows remote authenticated users to execute arbitrary code via a malicious theme. The Handlebars get helper passes theme-controlled path expressions to jsonpath, whose permissive evaluator accepts syntax beyond Ghost's required property paths. Exploitation requires administrator-level theme installation and user interaction; successful payloads run in the Ghost server process.

CVSS severity7.6
High
EPSS probability3.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Ghost 0.7.2 through 6.19.0 allows remote authenticated users to execute arbitrary code via a malicious theme. The Handlebars get helper passes theme-controlled path expressions to jsonpath, whose permissive evaluator accepts syntax beyond Ghost's required property paths. Exploitation requires administrator-level theme installation and user interaction; successful payloads run in the Ghost server process.

The record

CVE
CVE-2026-29053
Published
Mar 5, 2026
Updated
Mar 5, 2026
Vendor
Ghost Foundation
Product
Ghost
Classifications
CWE-74, T1204.002
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 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=>= 0.7.2, < 6.19.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Ghost Foundation · Ghostversion=>= 0.7.2, < 6.19.1

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.6GitHubCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1204.002User Execution: Malicious File

Public exploit references

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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