CVE-2026-33646Public exploitNetwork attack vector

Command execution via untrusted Tera template rendering

Published Jun 26, 2026 · Updated Jun 26, 2026

Code injection in jdx mise before 2026.3.10 allows remote attackers to execute commands via a crafted .tool-versions file. ToolVersions::parse_str renders the file through get_tera, which registers exec() and sends its command argument to a shell without a trust check. Execution requires a victim with mise shell activation enabled to enter the repository while paranoid mode is disabled, the default setting.

CVSS severity9.6
Critical
EPSS probability0.69%
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 jdx mise before 2026.3.10 allows remote attackers to execute commands via a crafted .tool-versions file. ToolVersions::parse_str renders the file through get_tera, which registers exec() and sends its command argument to a shell without a trust check. Execution requires a victim with mise shell activation enabled to enter the repository while paranoid mode is disabled, the default setting.

The record

CVE
CVE-2026-33646
Published
Jun 26, 2026
Updated
Jun 26, 2026
Vendor
jdx
Product
mise
Classifications
CWE-94, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 26, 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=< 2026.3.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

jdx · miseversion=< 2026.3.10

Published CVSS scores

9.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1203Exploitation for Client Execution

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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