CVE-2026-33154Public exploitNetwork attack vector

Command execution via unsandboxed Jinja template rendering

Published Mar 20, 2026 · Updated Mar 20, 2026

Server-side template injection in Dynaconf before 3.2.13 allows remote authenticated users to execute OS commands through crafted settings. The @Jinja resolver renders attacker-controlled configuration values with a full Jinja2 environment, exposing Python internals that reach os.popen. Jinja2 must be installed, and attackers must influence a settings source; @Format object traversal can also disclose process secrets.

CVSS severity7.5
High
EPSS probability0.53%
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 Dynaconf before 3.2.13 allows remote authenticated users to execute OS commands through crafted settings. The @Jinja resolver renders attacker-controlled configuration values with a full Jinja2 environment, exposing Python internals that reach os.popen. Jinja2 must be installed, and attackers must influence a settings source; @Format object traversal can also disclose process secrets.

The record

CVE
CVE-2026-33154
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
Dynaconf
Product
Dynaconf
Classifications
CWE-1336, CWE-94, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 3.2.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Dynaconf · Dynaconfversion=< 3.2.13

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5GitHub, Inc.CVSS:3.1/AV:N/AC:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1336Improper Neutralization of Special Elements Used in a Template Engine
CWE-94Improper Control of Generation of Code ('Code Injection')
T1059Command and Scripting Interpreter

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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