Common Weakness Enumeration

CWE-1336

Allowed

Improper Neutralization of Special Elements Used in a Template Engine

Abstraction: Base · Status: Incomplete

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.

398 vulnerabilities reference this CWE, most recent first.

CVE-2026-13051 (GCVE-0-2026-13051)

Vulnerability from cvelistv5 – Published: 2026-08-13 16:28 – Updated: 2026-08-14 17:47
VLAI
Title
Form::Processor::Field::HtmlArea versions from 0.06 through 1.162360 for Perl allow attacker selected method dispatch and resource exhaustion via an HTML::Tidy diagnostic that validate passes to add_error as a Locale::Maketext template
Summary
Form::Processor::Field::HtmlArea versions from 0.06 through 1.162360 for Perl allow attacker selected method dispatch and resource exhaustion via an HTML::Tidy diagnostic that validate passes to add_error as a Locale::Maketext template. validate runs HTML::Tidy over the submitted markup and passes each resulting message to add_error as its first argument, which add_error hands to the language handle as the Locale::Maketext message key. The default handle's lexicon sets `_AUTO`, so a message that is not a lexicon entry is compiled as a bracket notation template instead of being looked up. Tidy diagnostics quote the offending attribute name or value, so a bracket group in the submitted markup reaches the template position, where the first token of the group names a method called on the language handle and the remaining tokens are its arguments. A group such as `[0]` makes the compile croak, and neither the field nor the handle catches it, so the exception leaves validate. `[sprintf,%2000000000d,7]` reaches CORE::sprintf with an attacker chosen field width. One submission of crafted markup to an HtmlArea field throws an unhandled exception out of form validation or allocates an arbitrary amount of memory, and an application whose language handle subclass defines side effecting public methods makes those callable with attacker chosen arguments. The other field types pass fixed templates with the submitted value in an argument slot, where it stays inert, and are unaffected.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 17:46 UTC
CWE
  • CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
  • CWE-470 - Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
Impacted products
Vendor Product Version
Affected: 0.06 , ≤ 1.162360 (custom)
Show details on NVD website

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CVE-2026-11407 (GCVE-0-2026-11407)

Vulnerability from cvelistv5 – Published: 2026-06-17 20:07 – Updated: 2026-07-14 15:53
VLAI
Title
Pimcore CMS 12.3.8 Twig Sandbox Bypass via SecurityPolicy checkMethodAllowed
Summary
Pimcore CMS/DXP version 12.3.8 contains a sandbox bypass vulnerability that allows authenticated administrative attackers to execute arbitrary methods on PHP objects by exploiting empty checkMethodAllowed() and checkPropertyAllowed() implementations in the custom Twig SecurityPolicy. Attackers can supply malicious Twig templates through the DataObject ClassDefinition Layout\Text component to perform arbitrary file reads, execute arbitrary database queries, and potentially achieve remote code execution via PHP object gadget chains, with the pimcore_* function wildcard further broadening the bypass to all Pimcore Twig functions.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-18 12:55 UTC
CWE
  • CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
Impacted products
Vendor Product Version
Pimcore GmbH Pimcore CMS/DXP Affected: 0 , ≤ 12.3.8 (semver)
Unaffected: fffa7f6396329e88610db70a8652529bbc734892 (custom)
    cpe:2.3:a:pimcore:pimcore:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-06-17 20:00
Show details on NVD website

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CVE-2026-9558 (GCVE-0-2026-9558)

Vulnerability from cvelistv5 – Published: 2026-05-29 10:01 – Updated: 2026-05-29 10:49
VLAI
Summary
A Server-Side Template Injection (SSTI) vulnerability exists in Mautic's theme engine. The platform renders uploaded Twig templates without a sandbox or strict function restrictions. Authenticated users with permissions to create or upload themes can abuse this to execute arbitrary code on the hosting server (Remote Code Execution) or access restricted system files and configuration settings.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-29 10:48 UTC
CWE
  • CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
Impacted products
Vendor Product Version
Affected: 1.3.0 , < 4.4.20 (semver)
Affected: 5.0.0 , < 5.2.11 (semver)
Affected: 6.0.0 , < 6.0.9 (semver)
Affected: 7.0.0 , < 7.1.2 (semver)
Show details on NVD website

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CVE-2026-9498 (GCVE-0-2026-9498)

Vulnerability from cvelistv5 – Published: 2026-05-25 20:00 – Updated: 2026-05-28 15:44
VLAI
Title
Dromara lamp-cloud Message Template GroovyClassLoader.parseClass special elements used in a template engine
Summary
A vulnerability has been found in Dromara lamp-cloud up to 5.6.2. Impacted is the function GroovyClassLoader.parseClass of the component Message Template Handler. Such manipulation of the argument DefMsgTemplate.content leads to improper neutralization of special elements used in a template engine. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 15:44 UTC
CWE
  • CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
  • CWE-791 - Incomplete Filtering of Special Elements
References
URL Tags
https://vuldb.com/vuln/365481 vdb-entrytechnical-description
https://vuldb.com/vuln/365481/cti signaturepermissions-required
https://vuldb.com/submit/814103 third-party-advisory
https://github.com/Ku4D3/bug_story/blob/main/repo… exploit
Impacted products
Vendor Product Version
Dromara lamp-cloud Affected: 5.6.0
Affected: 5.6.1
Affected: 5.6.2
    cpe:2.3:a:dromara:lamp-cloud:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-9177 (GCVE-0-2026-9177)

Vulnerability from cvelistv5 – Published: 2026-07-29 13:46 – Updated: 2026-07-31 05:52
VLAI
Title
Server-Side Template Injection in SecureTransport's Apache Velocity mail templates
Summary
A Server-Side Template Injection (SSTI) vulnerability was identified in the mail template functionality of the Axway SecureTransport product in version 5.5-20260326. This flaw allows an attacker with admin privileges to inject arbitrary Java code expressions, which are executed server-side when the template is rendered (i.e., during email sending). Successful exploitation of this flaw allows an attacker to execute arbitrary code on the server that results in full host compromise. This issue affects all Axway SecureTransport versions prior 5.5-20260528 update.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 14:48 UTC
CWE
  • CWE-1336 - Improper neutralization of special elements used in a template engine
References
URL Tags
https://support.axway.com/news/4882/lang/en vendor-advisorymitigationpatchcustomer-entitlement
https://www.toreon.com/CVE-2026-9177 technical-description
https://docs.hackjiji.org/blog/cve-2026-9177-ssti… technical-description
Impacted products
Vendor Product Version
Axway SecureTransport Affected: 5.5-20260326 , < 5.5-20260528 (SecureTransport)
Create a notification for this product.
Show details on NVD website

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CVE-2026-8740 (GCVE-0-2026-8740)

Vulnerability from cvelistv5 – Published: 2026-05-17 08:00 – Updated: 2026-05-18 12:37
VLAI
Title
Sanluan PublicCMS templateResult API TemplateResultDirective.java execute special elements used in a template engine
Summary
A flaw has been found in Sanluan PublicCMS 5.202506.d. The impacted element is the function execute of the file publiccms-core/src/main/java/com/publiccms/views/directive/tools/TemplateResultDirective.java of the component templateResult API. This manipulation of the argument templateContent causes improper neutralization of special elements used in a template engine. The attack is possible to be carried out remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-18 12:36 UTC
CWE
  • CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
  • CWE-791 - Incomplete Filtering of Special Elements
References
URL Tags
https://vuldb.com/vuln/364328 vdb-entrytechnical-description
https://vuldb.com/vuln/364328/cti signaturepermissions-required
https://vuldb.com/submit/809932 third-party-advisory
https://vulnplus-note.wetolink.com/share/ILcCnOvJ1fMc exploit
Impacted products
Vendor Product Version
Sanluan PublicCMS Affected: 5.202506.d
    cpe:2.3:a:publiccms:publiccms:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-6984 (GCVE-0-2026-6984)

Vulnerability from cvelistv5 – Published: 2026-04-25 15:30 – Updated: 2026-04-27 17:32
VLAI
Title
AstrBotDevs AstrBot Dashboard API t2i.py create_template special elements used in a template engine
Summary
A security flaw has been discovered in AstrBotDevs AstrBot up to 4.22.1. This affects the function create_template of the file astrbot/dashboard/routes/t2i.py of the component Dashboard API. The manipulation results in improper neutralization of special elements used in a template engine. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-27 17:32 UTC
CWE
  • CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
  • CWE-791 - Incomplete Filtering of Special Elements
References
URL Tags
https://vuldb.com/vuln/359527 vdb-entrytechnical-description
https://vuldb.com/vuln/359527/cti signaturepermissions-required
https://vuldb.com/submit/796164 third-party-advisory
https://github.com/AstrBotDevs/AstrBot/issues/7330 exploitissue-tracking
https://github.com/AstrBotDevs/AstrBot/ product
Impacted products
Vendor Product Version
AstrBotDevs AstrBot Affected: 4.22.0
Affected: 4.22.1
    cpe:2.3:a:astrbot:astrbot:*:*:*:*:*:*:*:*
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Show details on NVD website

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CVE-2026-5987 (GCVE-0-2026-5987)

Vulnerability from cvelistv5 – Published: 2026-04-09 22:45 – Updated: 2026-04-10 13:52
VLAI
Title
Sanluan PublicCMS FreeMarker Template AbstractFreemarkerView.java AbstractFreemarkerView.doRender special elements used in a template engine
Summary
A security vulnerability has been detected in Sanluan PublicCMS up to 6.202506.d. This affects the function AbstractFreemarkerView.doRender of the file publiccms-parent/publiccms-core/src/main/java/com/publiccms/common/base/AbstractFreemarkerView.java of the component FreeMarker Template Handler. Such manipulation leads to improper neutralization of special elements used in a template engine. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-10 13:52 UTC
CWE
  • CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
  • CWE-791 - Incomplete Filtering of Special Elements
References
URL Tags
https://vuldb.com/vuln/356541 vdb-entrytechnical-description
https://vuldb.com/vuln/356541/cti signaturepermissions-required
https://vuldb.com/submit/792385 third-party-advisory
https://github.com/sanluan/PublicCMS/issues/113 exploitissue-tracking
https://github.com/sanluan/PublicCMS/ product
Impacted products
Vendor Product Version
Sanluan PublicCMS Affected: 4.0.202506.a
Affected: 4.0.202506.b
Affected: 5.202506.a
Affected: 5.202506.b
Affected: 5.202506.d
Affected: 6.202506.d
    cpe:2.3:a:publiccms:publiccms:*:*:*:*:*:*:*:*
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CVE-2026-5559 (GCVE-0-2026-5559)

Vulnerability from cvelistv5 – Published: 2026-04-05 10:15 – Updated: 2026-04-06 16:19
VLAI
Title
AntaresMugisho PyBlade AST Validation sandbox.py _is_safe_ast special elements used in a template engine
Summary
A vulnerability has been found in AntaresMugisho PyBlade 0.1.8-alpha/0.1.9-alpha. The affected element is the function _is_safe_ast of the file sandbox.py of the component AST Validation. Such manipulation leads to improper neutralization of special elements used in a template engine. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-06 16:19 UTC
CWE
  • CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
  • CWE-791 - Incomplete Filtering of Special Elements
References
Impacted products
Vendor Product Version
AntaresMugisho PyBlade Affected: 0.1.8-alpha
Affected: 0.1.9-alpha
Create a notification for this product.
Show details on NVD website

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CVE-2026-3725 (GCVE-0-2026-3725)

Vulnerability from cvelistv5 – Published: 2026-03-08 09:02 – Updated: 2026-03-11 15:32
VLAI
Title
1024-lab/lab1024 SmartAdmin FreeMarker Template MailService.java freemarkerResolverContent special elements used in a template engine
Summary
A flaw has been found in 1024-lab/lab1024 SmartAdmin up to 3.29. Affected by this issue is the function freemarkerResolverContent of the file sa-base/src/main/java/net/lab1024/sa/base/module/support/mail/MailService.java of the component FreeMarker Template Handler. Executing a manipulation of the argument template_content can lead to improper neutralization of special elements used in a template engine. The attack can be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-11 15:32 UTC
CWE
  • CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
  • CWE-791 - Incomplete Filtering of Special Elements
References
URL Tags
https://vuldb.com/?id.349703 vdb-entrytechnical-description
https://vuldb.com/?ctiid.349703 signaturepermissions-required
https://vuldb.com/?submit.766459 third-party-advisory
https://www.notion.so/SmartAdmin-Server-Side-Temp… exploit
Impacted products
Vendor Product Version
1024-lab SmartAdmin Affected: 3.0
Affected: 3.1
Affected: 3.2
Affected: 3.3
Affected: 3.4
Affected: 3.5
Affected: 3.6
Affected: 3.7
Affected: 3.8
Affected: 3.9
Affected: 3.10
Affected: 3.11
Affected: 3.12
Affected: 3.13
Affected: 3.14
Affected: 3.15
Affected: 3.16
Affected: 3.17
Affected: 3.18
Affected: 3.19
Affected: 3.20
Affected: 3.21
Affected: 3.22
Affected: 3.23
Affected: 3.24
Affected: 3.25
Affected: 3.26
Affected: 3.27
Affected: 3.28
Affected: 3.29
Create a notification for this product.
lab1024 SmartAdmin Affected: 3.0
Affected: 3.1
Affected: 3.2
Affected: 3.3
Affected: 3.4
Affected: 3.5
Affected: 3.6
Affected: 3.7
Affected: 3.8
Affected: 3.9
Affected: 3.10
Affected: 3.11
Affected: 3.12
Affected: 3.13
Affected: 3.14
Affected: 3.15
Affected: 3.16
Affected: 3.17
Affected: 3.18
Affected: 3.19
Affected: 3.20
Affected: 3.21
Affected: 3.22
Affected: 3.23
Affected: 3.24
Affected: 3.25
Affected: 3.26
Affected: 3.27
Affected: 3.28
Affected: 3.29
Create a notification for this product.
Show details on NVD website

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Mitigation
Architecture and Design

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
Implementation

Use the template engine's sandbox or restricted mode, if available.

No CAPEC attack patterns related to this CWE.