Common Weakness Enumeration
CWE-470
AllowedUse of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
Abstraction: Base · Status: Draft
The product uses external input with reflection to select which classes or code to use, but it does not sufficiently prevent the input from selecting improper classes or code.
127 vulnerabilities reference this CWE, most recent first.
CVE-2022-23744 (GCVE-0-2022-23744)
Vulnerability from cvelistv5 – Published: 2022-07-07 15:51 – Updated: 2024-08-03 03:51
VLAI
EPSS
VEX
Summary
Check Point Endpoint before version E86.50 failed to protect against specific registry change which allowed to disable endpoint protection by a local administrator.
Severity
No CVSS data available.
CWE
- CWE-470 - Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
Assigner
checkpoint
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://supportcenter.checkpoint.com/supportcente… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Enterprise Endpoint Security Windows Clients. |
Affected:
before E86.50
|
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CVE-2022-4993 (GCVE-0-2022-4993)
Vulnerability from cvelistv5 – Published: 2026-08-13 16:27 – Updated: 2026-09-08 20:07
VLAI
EPSS
VEX
Title
HTML::FormHandler versions before 0.410000 for Perl allow attacker selected method dispatch and resource exhaustion because _apply_actions and add_error use error message text built from request data as a Locale::Maketext bracket notation template
Summary
HTML::FormHandler versions before 0.410000 for Perl allow attacker selected method dispatch and resource exhaustion because _apply_actions and add_error use error message text built from request data as a Locale::Maketext bracket notation template.
add_error hands its first argument to the language handle as the Locale::Maketext message key, and the default handle's lexicon sets `_AUTO`, so a string that is not a lexicon entry is compiled as a bracket notation template instead of being looked up. In a bracket group the first token names a method called on the language handle and the remaining tokens are its arguments.
Three kinds of text the library did not author reach that position. _apply_actions installs a `$SIG{__WARN__}` handler that stores the warning text in `$error_message`, and a captured warning survives a successful action, so a field carrying a numeric transform turns `Argument "[sprintf,%50000000d,0]" isn't numeric` into the template; a warning quotes the submitted value verbatim, so the group is well formed and dispatches. `$error_message ||= $tobj->validate($new_value)` takes a type constraint's own failure message, which renders the rejected value through a partial dumper in bracket and comma form (Devel::PartialDump when Moose can load it, Type::Tiny's own dumper always), so a field with `apply => [ Str ]` given a parameter sent more than once, which arrives as an array, gets `Reference ["a","b"] did not pass type constraint "Str"` as its template, from a request that carries no bracket character of its own. A coercion or transform exception reaches it the same way. Beyond those, a validator whose message contains the field value puts that value in the template directly, and add_error replaces the message list with the contents of an arrayref first argument (`@message = @{$message[0]} if ref $message[0] eq 'ARRAY'`), so a value arriving as an array fills the argument slots from the same request as well.
A malformed group such as `[0]` makes the compile croak, and HTML::FormHandler::I18N::maketext and add_error each re-raise that as a die, so process() throws. A well formed group naming sprintf reaches CORE::sprintf with an attacker chosen field width. Any caller that applies a type constraint or a transform to an untrusted field, or whose validator passes an untrusted field value to add_error, can be made to throw an unhandled exception out of process(), or to allocate an arbitrary amount of memory in one request, and an application whose language handle subclass defines side effecting public methods makes those callable with attacker chosen arguments. The dumped type constraint message is bounded to the exception, because both dumpers quote non-numeric elements so the method slot is never an attacker chosen name. The built-in messages pass fixed templates with the value in an argument slot, where it stays inert, and the built-in field types attach explicit message callbacks, so neither is affected.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 11:14 UTC
CWE
Assigner
CPANSec
CNA
References
7 references
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CVE-2020-7857 (GCVE-0-2020-7857)
Vulnerability from cvelistv5 – Published: 2021-04-20 19:56 – Updated: 2024-08-04 09:41
VLAI
EPSS
VEX
Summary
A vulnerability of XPlatform could allow an unauthenticated attacker to execute arbitrary command. This vulnerability exists due to insufficient validation of improper classes. This issue affects: Tobesoft XPlatform versions prior to 9.2.2.280.
Severity
7.5 (High)
CWE
- CWE-470 - Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
Assigner
krcert
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://www.boho.or.kr/krcert/secNoticeView.do?bu… | x_refsource_MISC |
Impacted products
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CVE-2019-10174 (GCVE-0-2019-10174)
Vulnerability from cvelistv5 – Published: 2019-11-25 10:26 – Updated: 2024-08-04 22:10
VLAI
EPSS
VEX
Summary
A vulnerability was found in Infinispan such that the invokeAccessibly method from the public class ReflectionUtil allows any application class to invoke private methods in any class with Infinispan's privileges. The attacker can use reflection to introduce new, malicious behavior into the application.
Severity
7.5 (High)
CWE
Assigner
redhat
CNA
References
4 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://access.redhat.com/errata/RHSA-2020:0481 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2020:0727 | vendor-advisoryx_refsource_REDHAT |
| https://security.netapp.com/advisory/ntap-2022021… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| [UNKNOWN] | infinispan |
Affected:
10.0.0.Final
Affected: 9.4.17.Final |
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CVE-2019-3834 (GCVE-0-2019-3834)
Vulnerability from cvelistv5 – Published: 2019-10-03 13:31 – Updated: 2024-08-04 19:19
VLAI
EPSS
VEX
Summary
It was found that the fix for CVE-2014-0114 had been reverted in JBoss Operations Network 3 (JON). This flaw allows attackers to manipulate ClassLoader properties on a vulnerable server. Exploits that have been published rely on ClassLoader properties that are exposed such as those in JON 3. Additional information can be found in the Red Hat Knowledgebase article: https://access.redhat.com/site/solutions/869353. Note that while multiple products released patches for the original CVE-2014-0114 flaw, the reversion described by this CVE-2019-3834 flaw only occurred in JON 3.
Severity
5.6 (Medium)
CWE
Assigner
redhat
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
Impacted products
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CVE-2018-25239 (GCVE-0-2018-25239)
Vulnerability from cvelistv5 – Published: 2026-04-04 13:51 – Updated: 2026-04-06 16:42
VLAI
EPSS
VEX
Title
Smart VPN 1.1.3.0 Denial of Service via Search
Summary
Smart VPN 1.1.3.0 contains a denial of service vulnerability that allows local attackers to crash the application by submitting oversized input through the search interface. Attackers can paste a buffer of 2100 characters into the top right search bar to trigger an unhandled exception that crashes the application.
Severity
6.2 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-06 16:42 UTC
CWE
- CWE-470 - Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
Assigner
VulnCheck
CNA
References
3 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/46272 | exploit |
| https://www.microsoft.com/store/productId/9NH1G93D4HKR | product |
| https://www.vulncheck.com/advisories/smart-vpn-de… | third-party-advisory |
Date Public
2018-01-28 00:00
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CVE-2017-20285 (GCVE-0-2017-20285)
Vulnerability from cvelistv5 – Published: 2026-10-05 06:49 – Updated: 2026-10-06 17:02
VLAI
EPSS
VEX
Title
YAML versions before 1.30 for Perl allow a loaded document to trigger the DESTROY method of arbitrary classes
Summary
YAML versions before 1.30 for Perl allow a loaded document to trigger the DESTROY method of arbitrary classes.
A perl/hash:Class tag blesses a hash into the class it names. The document supplies the object's fields, and Perl calls DESTROY when it goes out of scope.
What DESTROY does depends on the classes the process has loaded. With File::Temp::Dir from core Perl, it can delete a directory tree the document names.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 17:02 UTC
CWE
Assigner
CPANSec
CNA
References
5 references
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],
"title": "YAML versions before 1.30 for Perl allow a loaded document to trigger the DESTROY method of arbitrary classes",
"workarounds": [
{
"lang": "en",
"value": "For deployments that cannot upgrade to YAML 1.30, set $YAML::LoadBlessed = 0 before loading untrusted input. The option exists from YAML 1.25."
}
],
"x_generator": {
"engine": "cpansec-cna-tool 0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"assignerShortName": "CPANSec",
"cveId": "CVE-2017-20285",
"datePublished": "2026-10-05T06:49:17.583Z",
"dateReserved": "2026-09-21T21:18:28.499Z",
"dateUpdated": "2026-10-06T17:02:58.695Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Architecture and Design
Refactor your code to avoid using reflection.
Mitigation
Architecture and Design
Do not use user-controlled inputs to select and load classes or code.
Mitigation
Implementation
Apply strict input validation by using allowlists or indirect selection to ensure that the user is only selecting allowable classes or code.
CAPEC-138: Reflection Injection
An adversary supplies a value to the target application which is then used by reflection methods to identify a class, method, or field. For example, in the Java programming language the reflection libraries permit an application to inspect, load, and invoke classes and their components by name. If an adversary can control the input into these methods including the name of the class/method/field or the parameters passed to methods, they can cause the targeted application to invoke incorrect methods, read random fields, or even to load and utilize malicious classes that the adversary created. This can lead to the application revealing sensitive information, returning incorrect results, or even having the adversary take control of the targeted application.