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CWE-1336
Improper Neutralization of Special Elements Used in a Template Engine
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.
CVE-2026-26026 (GCVE-0-2026-26026)
Vulnerability from cvelistv5 – Published: 2026-04-06 14:33 – Updated: 2026-04-07 03:55
VLAI
Title
GLPI has a Server-Side Template Injection via Double-Compilation
Summary
GLPI is a free asset and IT management software package. From 11.0.0 to before 11.0.6, template injection by an administrator lead to RCE. This vulnerability is fixed in 11.0.6.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/glpi-project/glpi/security/adv… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| glpi-project | glpi |
Affected:
>= 11.0.0, < 11.0.6
|
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CVE-2026-26938 (GCVE-0-2026-26938)
Vulnerability from cvelistv5 – Published: 2026-02-26 17:56 – Updated: 2026-02-27 16:03
VLAI
Title
Improper Neutralization of Special Elements Used in a Template Engine in Kibana Workflows Leading to Server-Side Request Forgery (SSRF)
Summary
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.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
Assigner
References
1 reference
Impacted products
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CVE-2026-27464 (GCVE-0-2026-27464)
Vulnerability from cvelistv5 – Published: 2026-02-21 07:57 – Updated: 2026-02-24 18:51
VLAI
Title
Metabase: Server-Side Template Injection via Notifications Endpoint Leads to RCE
Summary
Metabase is an open-source data analytics platform. In versions prior to 0.57.13 and versions 0.58.x through 0.58.6, authenticated users are able to retrieve sensitive information from a Metabase instance, including database access credentials. During testing, it was confirmed that a low-privileged user can extract sensitive information including database credentials, into the email body via template evaluation. This issue has been fixed in versions 0.57.13 and 0.58.7. To workaround this issue, users can disable notifications in their Metabase instance to disallow access to the vulnerable endpoints.
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/metabase/metabase/security/adv… | x_refsource_CONFIRM |
| https://github.com/metabase/metabase/releases/tag… | x_refsource_MISC |
| https://github.com/metabase/metabase/releases/tag… | x_refsource_MISC |
Impacted products
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CVE-2026-27629 (GCVE-0-2026-27629)
Vulnerability from cvelistv5 – Published: 2026-02-25 02:48 – Updated: 2026-02-26 21:33
VLAI
Title
InvenTree Vulnerable to Server Side Template Injection (SSTI)
Summary
InvenTree is an Open Source Inventory Management System. Prior to version 1.2.3, insecure server-side templates can be hijacked to expose secure information to the client. When generating custom batch codes, the InvenTree server makes use of a customizable jinja2 template, which can be modified by a staff user to exfiltrate sensitive information or perform code execution on the server. This issue requires access by a user with granted staff permissions, followed by a request to generate a custom batch code via the API. Once the template has been modified in a malicious manner, the API call to generate a new batch code could be made by other users, and the template code will be executed with their user context. The code has been patched to ensure that all template generation is performed within a secure sandboxed context. This issue has been addressed in version 1.2.3, and any versions from 1.3.0 onwards. Some workarounds are available. The batch code template is a configurable global setting which can be adjusted via any user with staff access. To prevent this setting from being edited, it can be overridden at a system level to a default value, preventing it from being edited. This requires system administrator access, and cannot be changed from the client side once the server is running. It is recommended that for InvenTree installations prior to 1.2.3 the `STOCK_BATCH_CODE_TEMPLATE` and `PART_NAME_FORMAT` global settings are overridden at the system level to prevent editing.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
Assigner
References
1 reference
| URL | Tags |
|---|---|
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CVE-2026-27641 (GCVE-0-2026-27641)
Vulnerability from cvelistv5 – Published: 2026-02-25 03:54 – Updated: 2026-02-25 21:12
VLAI
Title
Flask-Reuploaded vulnerable to Remote Code Execution via Server-Side Template Injection
Summary
Flask-Reuploaded provides file uploads for Flask. A critical path traversal and extension bypass vulnerability in versions prior to 1.5.0 allows remote attackers to achieve arbitrary file write and remote code execution through Server-Side Template Injection (SSTI). Flask-Reuploaded has been patched in version 1.5.0. Some workarounds are available. Do not pass user input to the `name` parameter, use auto-generated filenames only, and implement strict input validation if `name` must be used.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/jugmac00/flask-reuploaded/secu… | x_refsource_CONFIRM |
| https://github.com/jugmac00/flask-reuploaded/pull/180 | x_refsource_MISC |
| https://github.com/jugmac00/flask-reuploaded/comm… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jugmac00 | flask-reuploaded |
Affected:
< 1.5.0
|
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CVE-2026-27961 (GCVE-0-2026-27961)
Vulnerability from cvelistv5 – Published: 2026-02-26 01:39 – Updated: 2026-02-26 19:29
VLAI
Title
Agenta's Server-Side Template Injection (SSTI) via custom evaluator Jinja2 templates allows RCE
Summary
Agenta is an open-source LLMOps platform. A Server-Side Template Injection (SSTI) vulnerability exists in versions prior to 0.86.8 in Agenta's API server evaluator template rendering. Although the vulnerable code lives in the SDK package, it is executed server-side within the API process when running evaluators. This does not affect standalone SDK usage — it only impacts self-hosted or managed Agenta platform deployments. Version 0.86.8 contains a fix for the issue.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/Agenta-AI/agenta/security/advi… | x_refsource_CONFIRM |
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CVE-2026-28228 (GCVE-0-2026-28228)
Vulnerability from cvelistv5 – Published: 2026-03-30 20:31 – Updated: 2026-03-31 18:53
VLAI
Title
OpenOLAT: Server-Side Template Injection (SSTI) in Velocity templates allows Remote Code Execution
Summary
OpenOlat is an open source web-based e-learning platform for teaching, learning, assessment and communication. Prior to versions 19.1.31, 20.1.18, and 20.2.5, an authenticated user with the Author role can inject Velocity directives into a reminder email template. When the reminder is processed (either triggered manually or via the daily cron job), the injected directives are evaluated server-side. By chaining Velocity's #set directive with Java reflection, an attacker can instantiate arbitrary Java classes such as java.lang.ProcessBuilder and execute operating system commands with the privileges of the Tomcat process (typically root in containerized deployments). This issue has been patched in versions 19.1.31, 20.1.18, and 20.2.5.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/OpenOLAT/OpenOLAT/security/adv… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-28695 (GCVE-0-2026-28695)
Vulnerability from cvelistv5 – Published: 2026-03-04 16:15 – Updated: 2026-03-06 05:01
VLAI
Title
Craft affected by authenticated RCE via Twig SSTI - create() function + Symfony Process gadget
Summary
Craft is a content management system (CMS). There is an authenticated admin RCE in Craft CMS 5.8.21 via Server-Side Template Injection using the create() Twig function combined with a Symfony Process gadget chain. The create() Twig function exposes Craft::createObject(), which allows instantiation of arbitrary PHP classes with constructor arguments. Combined with the bundled symfony/process dependency, this enables RCE. This bypasses the fix implemented for CVE-2025-57811 (patched in 5.8.7). This vulnerability is fixed in 5.9.0-beta.1 and 4.17.0-beta.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/craftcms/cms/security/advisori… | x_refsource_CONFIRM |
| https://github.com/craftcms/cms/commit/e31e50849a… | x_refsource_MISC |
Impacted products
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CVE-2026-28697 (GCVE-0-2026-28697)
Vulnerability from cvelistv5 – Published: 2026-03-04 16:26 – Updated: 2026-03-06 05:01
VLAI
Title
Craft Affected by Authenticated RCE via "craft.app.fs.write()" in Twig Templates
Summary
Craft is a content management system (CMS). Prior to 4.17.0-beta.1 and 5.9.0-beta.1, an authenticated administrator can achieve Remote Code Execution (RCE) by injecting a Server-Side Template Injection (SSTI) payload into Twig template fields (e.g., Email Templates). By calling the craft.app.fs.write() method, an attacker can write a malicious PHP script to a web-accessible directory and subsequently access it via the browser to execute arbitrary system commands. This vulnerability is fixed in 4.17.0-beta.1 and 5.9.0-beta.1.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/craftcms/cms/security/advisori… | x_refsource_CONFIRM |
| https://github.com/craftcms/cms/pull/18216 | x_refsource_MISC |
| https://github.com/craftcms/cms/pull/18219 | x_refsource_MISC |
| https://github.com/craftcms/cms/commit/9dc2a4a3ec… | x_refsource_MISC |
Impacted products
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"discovery": "UNKNOWN"
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"title": "Craft Affected by Authenticated RCE via \"craft.app.fs.write()\" in Twig Templates"
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"cveId": "CVE-2026-28697",
"datePublished": "2026-03-04T16:26:37.476Z",
"dateReserved": "2026-03-02T21:43:19.928Z",
"dateUpdated": "2026-03-06T05:01:23.152Z",
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CVE-2026-28783 (GCVE-0-2026-28783)
Vulnerability from cvelistv5 – Published: 2026-03-04 16:50 – Updated: 2026-03-06 05:01
VLAI
Title
Craft has a Twig Function Blocklist Bypass
Summary
Craft is a content management system (CMS). Prior to 5.9.0-beta.1 and 4.17.0-beta.1, Craft CMS implements a blocklist to prevent potentially dangerous PHP functions from being called via Twig non-Closure arrow functions. In order to be able to successfully execute this attack, you need to either have allowAdminChanges enabled on production, or a compromised admin account, or an account with access to the System Messages utility. Several PHP functions are not included in the blocklist, which could allow malicious actors with the required permissions to execute various types of payloads, including RCEs, arbitrary file reads, SSRFs, and SSTIs. This vulnerability is fixed in 5.9.0-beta.1 and 4.17.0-beta.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/craftcms/cms/security/advisori… | x_refsource_CONFIRM |
| https://github.com/craftcms/cms/pull/18208 | x_refsource_MISC |
Impacted products
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"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
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Mitigation
Phase: Architecture and Design
Description:
- Choose a template engine that offers a sandbox or restricted mode, or at least limits the power of any available expressions, function calls, or commands.
Mitigation
Phase: Implementation
Description:
- Use the template engine's sandbox or restricted mode, if available.
No CAPEC attack patterns related to this CWE.