dynaconf up to 3.2.12 on Python Configuration special elements used in a template engine

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in dynaconf up to 3.2.12 on Python. This vulnerability affects unknown code of the component Configuration Handler. Performing a manipulation results in improper neutralization of special elements used in a template engine. This vulnerability was named CVE-2026-33154. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in dynaconf up to 3.2.12 on Python. It has been classified as problematic. This affects some unknown processing of the component Configuration Handler. The manipulation with an unknown input leads to a improper neutralization of special elements used in a template engine vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

dynaconf is a configuration management tool for Python. Prior to version 3.2.13, Dynaconf is vulnerable to Server-Side Template Injection (SSTI) due to unsafe template evaluation in the @Jinja resolver. When the jinja2 package is installed, Dynaconf evaluates template expressions embedded in configuration values without a sandboxed environment. This issue has been patched in version 3.2.13.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-33154 since 03/17/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1221 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 303261 (Linux Distros Unpatched Vulnerability : CVE-2026-33154), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.2.13 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 2fbb45ee36b8c0caa5b924fe19f3c1a5e8603fa7 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (303261). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper neutralization of special elements used in a template engine
CWE: CWE-1336 / CWE-791 / CWE-790
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 303261
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-33154

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: dynaconf 3.2.13
Patch: 2fbb45ee36b8c0caa5b924fe19f3c1a5e8603fa7

Timelineinfo

03/17/2026 CVE reserved
03/20/2026 +3 days Advisory disclosed
03/20/2026 +0 days VulDB entry created
03/27/2026 +7 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-pxrr-hq57-q35p
Status: Confirmed

CVE: CVE-2026-33154 (🔒)
GCVE (CVE): GCVE-0-2026-33154
GCVE (VulDB): GCVE-100-352113

Entryinfo

Created: 03/20/2026 23:23
Updated: 03/27/2026 02:58
Changes: 03/20/2026 23:23 (67), 03/22/2026 11:18 (2), 03/27/2026 02:58 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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