OpenStack Ironic up to 35.0.1 instance_info['ks_template'] special elements used in a template engine

CVSS Meta Temp Score
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CTI Interest Score
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2.6$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenStack Ironic up to 35.0.1 and classified as problematic. Affected by this issue is some unknown functionality. Executing a manipulation of the argument instance_info['ks_template'] can lead to improper neutralization of special elements used in a template engine. The identification of this vulnerability is CVE-2026-44916. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic was found in OpenStack Ironic up to 35.0.1. This vulnerability affects an unknown code. The manipulation of the argument instance_info['ks_template'] with an unknown input leads to a improper neutralization of special elements used in a template engine vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality. CVE summarizes:

In OpenStack Ironic before 35.0.2 (in a certain non-default configuration), instance_info['ks_template'] is rendered without sandboxing.

The advisory is shared for download at bugs.launchpad.net. This vulnerability was named CVE-2026-44916 since 05/08/2026. The exploitation appears to be difficult. The attack can be initiated remotely. Additional levels of successful authentication are needed for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1221.

The vulnerability scanner Nessus provides a plugin with the ID 313241 (Linux Distros Unpatched Vulnerability : CVE-2026-44916), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (313241). Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.6
VulDB Meta Temp Score: 2.6

VulDB Base Score: 2.2
VulDB Temp Score: 2.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.0
CNA Vector (MITRE): 🔒

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: 313241
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-44916

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/08/2026 Advisory disclosed
05/08/2026 +0 days CVE reserved
05/08/2026 +0 days VulDB entry created
05/21/2026 +12 days VulDB entry last update

Sourcesinfo

Vendor: openstack.org

Advisory: bugs.launchpad.net
Status: Confirmed

CVE: CVE-2026-44916 (🔒)
GCVE (CVE): GCVE-0-2026-44916
GCVE (VulDB): GCVE-100-362044

Entryinfo

Created: 05/08/2026 09:21
Updated: 05/21/2026 01:54
Changes: 05/08/2026 09:21 (62), 05/09/2026 00:43 (2), 05/21/2026 01:54 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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