VDB-348028 · CVE-2026-26938 · WID-SEC-2026-0545

Elastic Kibana up to 9.3.0 Workflows special elements used in a template engine

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.9	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Elastic Kibana up to 9.3.0. Affected is an unknown function of the component Workflows. Executing a manipulation can lead to improper neutralization of special elements used in a template engine. This vulnerability appears as CVE-2026-26938. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Elastic Kibana up to 9.3.0. It has been declared as problematic. This vulnerability affects some unknown functionality of the component Workflows. The manipulation 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:

Improper Neutralization of Special Elements Used in a Template Engine (CWE-1336) exists in Workflows in Kibana which could allow an attacker to read arbitrary files from the Kibana server filesystem, and perform Server-Side Request Forgery (SSRF) via Code Injection (CAPEC-242). This requires an authenticated user who has the workflowsManagement:executeWorkflow privilege.

The advisory is shared for download at discuss.elastic.co. This vulnerability was named CVE-2026-26938 since 02/16/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1221.

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 CERT Bund (WID-SEC-2026-0545). Once again VulDB remains the best source for vulnerability data.

Affected

Open Source Kibana

Productinfo

Vendor

Elastic

Name

Kibana

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.9

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.7
NVD Vector: 🔒

CNA Base Score: 8.6
CNA Vector (elastic): 🔒

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/16/2026 CVE reserved
02/26/2026 +10 days Advisory disclosed
02/26/2026 +0 days VulDB entry created
03/03/2026 +5 days VulDB entry last update

Sourcesinfo

Advisory: discuss.elastic.co
Status: Confirmed

CVE: CVE-2026-26938 (🔒)
GCVE (CVE): GCVE-0-2026-26938
GCVE (VulDB): GCVE-100-348028
CERT Bund: WID-SEC-2026-0545 - Kibana: Mehrere Schwachstellen ermöglichen Denial of Service und Offenlegung von Informationen

Entryinfo

Created: 02/26/2026 19:33
Updated: 03/03/2026 11:39
Changes: 02/26/2026 19:33 (61), 02/27/2026 19:01 (7), 03/03/2026 11:39 (11)
Complete: 🔍
Cache ID: 216::103