CVE-2026-86472: Improper Handling of Case Sensitivity

fast-uri is a dependency-free RFC 3986 URI parser for Node.js, used by Fastify and ajv. In versions before 2.4.7, from 3.0.0 through 3.1.7, and from 4.0.0 through 4.1.4, fast-uri folds the host to lowercase before it percent-decodes the host, so a percent-encoded uppercase octet such as %41 decod...

CVE-2026-54567

Flask-Reuploaded provides file uploads for Flask. From 1.5.0 until 1.6.0, UploadSet.savestorage, name=... in src/flaskuploads/flaskuploads.py applies lowercaseext to the default upload path but uses the case-preserving extension helper for a caller-supplied name before extensionallowed evaluates ...

Astra Linux – Vulnerability in Tomcat9

Improper handling of the case sensitivity vulnerability in LockOutRealm in Apache Tomcat. This issue affects Apache Tomcat: versions 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, and from 7.0.0 through 7.0.109. Older,...

Astra Linux – Vulnerability in Tomcat9

Improper handling of the case sensitivity vulnerability in Apache Tomcat’s GCI servlet allows bypassing security constraints that apply to the pathInfo component of a URI mapped to the CGI servlet. This issue affects Apache Tomcat versions from 11.0.0-M1 through 11.0.6, from 10.1.0-M1 through...

tomcat-catalina: Apache Tomcat: Improper Handling of Case Sensitivity in LockOutRealm

In Apache Tomcat, LockOutRealm mishandled case sensitivity in usernames, resulting in less effective blocking of brute force attacks...

tomcat: Apache Tomcat: Security constraint bypass for CGI scripts

A flaw was found in the CGI servlet component of Apache Tomcat. This vulnerability allows a security constraint bypass via improper handling of case sensitivity in the pathInfo component of a URI mapped to the CGI servlet...

tomcat-catalina: Apache Tomcat: Improper Handling of Case Sensitivity in LockOutRealm

In Apache Tomcat, LockOutRealm mishandled case sensitivity in usernames, resulting in less effective blocking of brute force attacks...

crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application

A flaw was found in the crypto/x509 package within Go golang. When verifying a certificate chain, excluded DNS Domain Name System constraints are not correctly applied to wildcard DNS Subject Alternative Names SANs if the case of the SAN differs from the constraint. This oversight could allow an...

crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application

A flaw was found in the crypto/x509 package within Go golang. When verifying a certificate chain, excluded DNS Domain Name System constraints are not correctly applied to wildcard DNS Subject Alternative Names SANs if the case of the SAN differs from the constraint. This oversight could allow an...

CVE-2026-54567: Improper Handling of Case Sensitivity

Flask-Reuploaded provides file uploads for Flask. From 1.5.0 until 1.6.0, UploadSet.savestorage, name=... in src/flaskuploads/flaskuploads.py applies lowercaseext to the default upload path but uses the case-preserving extension helper for a caller-supplied name before extensionallowed evaluates ...

EUVD-2026-76915

SEP sesam before 5.2.0.24 mishandles User Authorization with MFA. If AD authentication is configured and MFA is enforced, an attacker can create a second OTP access capability. SEP sesam and Active Directory handle username capitalization differently, which may allow multiple SEP sesam user...

CVE-2026-79300

SEP sesam before 5.2.0.24 mishandles user authorization when combined with Active Directory (AD) authentication and enforced multi-factor authentication (MFA) . The root cause is a case-sensitivity mismatch : Active Directory treats usernames as case-insensitive, while SEP sesam distinguishes let...

CVE-2026-79300

SEP sesam before 5.2.0.24 mishandles User Authorization with MFA. If AD authentication is configured and MFA is enforced, an attacker can create a second OTP access capability. SEP sesam and Active Directory handle username capitalization differently, which may allow multiple SEP sesam user...

PT-2026-90723

Name of the Vulnerable Software and Affected Versions SEP sesam versions prior to 5.2.0.24 Description An issue exists in the handling of user authorization when multi-factor authentication MFA is enforced and Active Directory AD authentication is configured. Because Active Directory treats...

Improper Handling of Case Sensitivity

Overview dolibarr/dolibarr is a modern and easy to use web software to manage your business. Affected versions of this package are vulnerable to Improper Handling of Case Sensitivity via the sqlfilters parameter. An attacker can recover protected database fields by supplying uppercase variants of...

CVE-2026-89012 Dolibarr 24.0.0 < 24.0.1 SQL Filter Denylist Bypass via sqlfilters Parameter

Dolibarr 24.0.0 before 24.0.1 contains a case-sensitive denylist bypass vulnerability in the sqlfilters API query parameter that allows authenticated attackers to recover protected database fields by supplying uppercase variants of denylist-protected field names. Attackers can exploit the...

BIT-TOMCAT-2026-43513 Apache Tomcat: LockOutRealm treats user names as case-sensitive

Improper Handling of Case Sensitivity vulnerability in LockOutRealm in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0 through 11.0.21, from 10.1.0 through 10.1.54, from 9.0.0 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...

PT-2026-89898

Dolibarr 24.0.0 before 24.0.1 contains a case-sensitive denylist bypass vulnerability in the sqlfilters API query parameter that allows authenticated attackers to recover protected database fields by supplying uppercase variants of denylist-protected field names. Attackers can exploit the...

Exploit for Improper Handling of Case Sensitivity in Apache Camel

CVE-2025-27636 – Apache Camel RCE Simple Python exploit for t...

CVE-2026-86770

Snipe-IT before 8.7.0 fails to validate username case sensitivity during SAML authentication, allowing attackers to authenticate as different users by registering IdP accounts with accent or case variants of victim usernames. Attackers can exploit the default utf8mb4unicodeci database collation t...