Common Weakness Enumeration

CWE-178

Allowed

Improper Handling of Case Sensitivity

Abstraction: Base · Status: Incomplete

The product does not properly account for differences in case sensitivity when accessing or determining the properties of a resource, leading to inconsistent results.

196 vulnerabilities reference this CWE, most recent first.

CVE-2026-47346 (GCVE-0-2026-47346)

Vulnerability from cvelistv5 – Published: 2026-06-09 10:50 – Updated: 2026-06-11 13:25
VLAI
Title
TYPO3 CMS - Broken Access Control in Form Framework
Summary
Backend users with file write permissions were able to upload form definition files with mixed-case extensions (e.g., .FORM.YAML) to bypass the Form Framework's upload restriction. Maliciously crafted form definition files can be used to execute arbitrary SQL statements, allowing attackers to escalate privileges by creating administrative backend user accounts. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-09 12:51 UTC
CWE
  • CWE-178 - Improper Handling of Case Sensitivity
  • CWE-862 - Missing Authorization
Impacted products
Vendor Product Version
TYPO3 TYPO3 CMS Affected: 0 , < 10.4.57 (semver)
Affected: 11.0.0 , < 11.5.51 (semver)
Affected: 12.0.0 , < 12.4.46 (semver)
Affected: 13.0.0 , < 13.4.31 (semver)
Affected: 14.0.0 , < 14.3.3 (semver)
    cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
    cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
    cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
    cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
    cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-47323 (GCVE-0-2026-47323)

Vulnerability from cvelistv5 – Published: 2026-05-19 12:25 – Updated: 2026-07-15 00:49
VLAI
Title
Apache Camel: Camel-CXF Message Header Injection via Missing Inbound Filtering
Summary
Camel-CXF and Camel-Knative Message Header Injection via Missing Inbound Filtering The CXF and Knative HeaderFilterStrategy implementations (CxfRsHeaderFilterStrategy in camel-cxf-rest, CxfHeaderFilterStrategy in camel-cxf-transport, and KnativeHttpHeaderFilterStrategy in camel-knative-http) only filter outbound Camel-internal headers via setOutFilterStartsWith, while not configuring inbound filtering via setInFilterStartsWith. As a result, an unauthenticated attacker can inject Camel-internal headers (e.g. CamelExecCommandExecutable, CamelFileName) via HTTP requests to CXF-RS or CXF-SOAP endpoints. When a route forwards messages from these endpoints to header-driven components such as camel-exec or camel-file, the injected headers override configured values, enabling remote code execution or arbitrary file writes. This is the same pattern that was previously addressed in camel-undertow (CVE-2025-30177), the broader incoming-header filter (CVE-2025-27636 and CVE-2025-29891), and non-HTTP strategies (CVE-2026-40453). This issue affects Apache Camel: from 3.18.0 before 4.14.6, from 4.15.0 before 4.18.2. Users are recommended to upgrade to version 4.19.0, which fixes the issue. If users are on the 4.18.x LTS releases stream, then they are suggested to upgrade to 4.18.2. If users are on the 4.14.x LTS releases stream, then they are suggested to upgrade to 4.14.6.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-19 00:00 UTC
CWE
  • CWE-178 - Improper Handling of Case Sensitivity
  • CWE-791 - Incomplete Filtering of Special Elements
Credits
Show details on NVD website

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CVE-2026-47203 (GCVE-0-2026-47203)

Vulnerability from cvelistv5 – Published: 2026-06-19 20:19 – Updated: 2026-06-22 18:13
VLAI
Title
Authelia Missing Username Canonicalization in Basic Auth (LDAP)
Summary
Authelia is an open-source authentication and authorization server providing two-factor authentication and single sign-on (SSO) for applications via a web portal. In versions 4.38.0 through 4.39.19, when a user authenticates via Basic Auth (i.e via the `Authorization` header with the `Basic` scheme) on the authz verification endpoint, Authelia takes the username directly from the `Authorization` header and passes it as is to the regulation system for ban checking and attempt recording. LDAP treats usernames case insensitively : `john`, `John`, and `JOHN` all bind as the same user. But the regulation SQL queries treat the lookup of these values in certain scenarios as case sensitive. This allows each variation of a usernames case to have its own ban bucket. Upgrade to 4.39.20 to receive a patch. As a workaround, explicitly disable the basic auth mechanism.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 17:29 UTC
CWE
  • CWE-178 - Improper Handling of Case Sensitivity
  • CWE-307 - Improper Restriction of Excessive Authentication Attempts
References
Impacted products
Vendor Product Version
authelia authelia Affected: >= 4.38.0, < 4.39.20
Create a notification for this product.
Show details on NVD website

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CVE-2026-46392 (GCVE-0-2026-46392)

Vulnerability from cvelistv5 – Published: 2026-06-05 18:20 – Updated: 2026-06-05 19:11
VLAI
Title
HAX CMS PHP Has a Stored XSS via Case-Sensitivity Mismatch in HTML Upload Validation
Summary
HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0 of HAX CMS PHP, the `saveFile` endpoint validates upload extensions case-insensitively and writes the filename to disk verbatim, but the `.htaccess` rule that forces `Content-Disposition: attachment` on HTML files is case-sensitive. An HTML file uploaded with an uppercase extension (`.HTML`, `.Html`, `.HTM`) is still served as `text/html` but the forced-download header never applies, so the browser renders it inline and executes any embedded JavaScript in the HAXcms origin. This bypasses the mitigation shipped for CVE-2026-22704. Version 26.0.0 contains a fix.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-05 19:11 UTC
CWE
  • CWE-178 - Improper Handling of Case Sensitivity
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
References
Impacted products
Vendor Product Version
haxtheweb haxcms-php Affected: < 26.0.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-45135 (GCVE-0-2026-45135)

Vulnerability from cvelistv5 – Published: 2026-06-23 17:56 – Updated: 2026-06-23 18:30
VLAI
Title
Caddy: Unsafe Unicode Handling in FastCGI splitPos Allows Execution of Non-PHP Files
Summary
Caddy is an extensible server platform that uses TLS by default. From 2.7.0 until 2.11.3, the FastCGI transport's splitPos() in modules/caddyhttp/reverseproxy/fastcgi/fastcgi.go misuses golang.org/x/text/search with search.IgnoreCase when the request path contains a non-ASCII byte. Two distinct flaws in that fallback let an attacker mislead Caddy's FastCGI splitting into treating a non-.php (or other configured split_path extension) file as a script. In any deployment where the attacker can place content into a file served via FastCGI (uploads, file storage, etc.), this can be escalated to remote code execution by crafting a URL whose path triggers either flaw. This vulnerability is fixed in 2.11.3.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 18:30 UTC
CWE
  • CWE-20 - Improper Input Validation
  • CWE-176 - Improper Handling of Unicode Encoding
  • CWE-178 - Improper Handling of Case Sensitivity
References
Impacted products
Vendor Product Version
caddyserver caddy Affected: >= 2.7.0, < 2.11.3
Create a notification for this product.
Show details on NVD website

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CVE-2026-45062 (GCVE-0-2026-45062)

Vulnerability from cvelistv5 – Published: 2026-06-10 17:38 – Updated: 2026-06-11 14:00
VLAI
Title
FrankenPHP: Unsafe Unicode Handling in CGI Path Splitting Allows Execution of Non-PHP Files
Summary
FrankenPHP is a modern application server for PHP. From version 1.11.2 to before version 1.12.3, the splitPos() function in cgi.go misuses golang.org/x/text/search with search.IgnoreCase when the request path contains a non-ASCII byte. Two distinct flaws in that fallback let an attacker mislead FrankenPHP into treating a non-.php file as a .php script. In any deployment where the attacker can place content into a file served by FrankenPHP (uploads, file storage, etc.), this can be escalated to remote code execution by crafting a URL whose path triggers either flaw. This issue has been patched in version 1.12.3.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-11 14:00 UTC
CWE
  • CWE-20 - Improper Input Validation
  • CWE-176 - Improper Handling of Unicode Encoding
  • CWE-178 - Improper Handling of Case Sensitivity
References
Impacted products
Vendor Product Version
php frankenphp Affected: >= 1.11.2, < 1.12.3
Create a notification for this product.
Show details on NVD website

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CVE-2026-44367 (GCVE-0-2026-44367)

Vulnerability from cvelistv5 – Published: 2026-06-02 15:29 – Updated: 2026-06-02 15:55
VLAI
Title
Klaw: user lockout due to case sensitivity inconsistency
Summary
Klaw is a self-service Apache Kafka Topic Management/Governance tool/portal. Prior to version 2.10.4, a vulnerability exists in the user registration and login mechanisms due to inconsistent handling of username case sensitivity, leading to a targeted Denial of Service (DoS) and complete account lockout. This issue has been patched in version 2.10.4.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-02 15:55 UTC
CWE
  • CWE-178 - Improper Handling of Case Sensitivity
  • CWE-20 - Improper Input Validation
References
Impacted products
Vendor Product Version
Aiven-Open klaw Affected: < 2.10.4
Create a notification for this product.
Show details on NVD website

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CVE-2026-43513 (GCVE-0-2026-43513)

Vulnerability from cvelistv5 – Published: 2026-05-12 15:26 – Updated: 2026-05-14 19:53
VLAI
Title
Apache Tomcat: LockOutRealm treats user names as case-sensitive
Summary
Improper Handling of Case Sensitivity vulnerability in LockOutRealm in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Older unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-14 16:34 UTC
CWE
  • CWE-178 - Improper Handling of Case Sensitivity
Impacted products
Vendor Product Version
Apache Software Foundation Apache Tomcat Affected: 11.0.0-M1 , ≤ 11.0.21 (semver)
Affected: 10.1.0-M1 , ≤ 10.1.54 (semver)
Affected: 9.0.0.M1 , ≤ 9.0.117 (semver)
Affected: 8.5.0 , ≤ 8.5.100 (semver)
Affected: 7.0.0 , ≤ 7.0.109 (semver)
Unknown: 0 , < 7.00 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-42273 (GCVE-0-2026-42273)

Vulnerability from cvelistv5 – Published: 2026-05-08 03:42 – Updated: 2026-05-08 10:40
VLAI
Title
Heimdall: Case-sensitive host matching may lead to policy bypass
Summary
Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.14, Heimdall performs host matching in a case-sensitive manner, while HTTP hostnames are case-insensitive. This discrepancy can result in heimdall failing to match a rule for a request host that differs only in letter casing, potentially causing the request to be classified differently than intended. This issue has been patched in version 0.17.14.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-08 10:40 UTC
CWE
  • CWE-436 - Interpretation Conflict
  • CWE-178 - Improper Handling of Case Sensitivity
Impacted products
Vendor Product Version
dadrus heimdall Affected: < 0.17.14
Create a notification for this product.
Show details on NVD website

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        },
        {
          "name": "https://github.com/dadrus/heimdall/commit/3d05e56a9e7ef0355f17482b4322054af4e85943",
          "tags": [
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      "source": {
        "advisory": "GHSA-72h4-mxfc-jx37",
        "discovery": "UNKNOWN"
      },
      "title": "Heimdall: Case-sensitive host matching may lead to policy bypass"
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    "datePublished": "2026-05-08T03:42:50.312Z",
    "dateReserved": "2026-04-26T11:53:27.707Z",
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CVE-2026-42272 (GCVE-0-2026-42272)

Vulnerability from cvelistv5 – Published: 2026-05-08 03:40 – Updated: 2026-05-08 23:12
VLAI
Title
Heimdall: Case-sensitive handling of URL-encoded slashes may lead to inconsistent path interpretation
Summary
Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.14, Heimdall handles URL-encoded slashes (%2F) in a case-sensitive manner, while percent-encoding is defined to be case-insensitive. As a result, the lowercase equivalent (%2f) is not recognized and therefore not processed as expected when allow_encoded_slashes is set to off (the default setting). This discrepancy can lead to differences in how request paths are interpreted by heimdall and upstream components, which may result in authorization bypass. This issue has been patched in version 0.17.14.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-08 23:12 UTC
CWE
  • CWE-436 - Interpretation Conflict
  • CWE-178 - Improper Handling of Case Sensitivity
Impacted products
Vendor Product Version
dadrus heimdall Affected: < 0.17.14
Create a notification for this product.
Show details on NVD website

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Mitigation MIT-44
Architecture and Design

Strategy: Input Validation

Avoid making decisions based on names of resources (e.g. files) if those resources can have alternate names.

Mitigation MIT-5
Implementation

Strategy: Input Validation

  • Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
  • When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
  • Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
Mitigation MIT-20
Implementation

Strategy: Input Validation

Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.

No CAPEC attack patterns related to this CWE.