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-2026-82067: Improper Handling of Case Sensitivity

Improper handling of case sensitivity in the configuration validation component of MongoDB Server may cause the authorization subsystem to remain in a default disabled state during server startup. An unauthenticated user with network access to a deployment where this condition occurs can perform...

PT-2026-87160

Name of the Vulnerable Software and Affected Versions MongoDB Server affected versions not specified Description Improper handling of case sensitivity in the configuration validation component may cause the authorization subsystem to remain in a default disabled state during server startup. This...

CVE-2021-48006 PocketMine-MP before 4.0.3 Operator Privilege Escalation via Case Sensitivity

PocketMine-MP before 4.0.3 does not perform case-insensitive matching when removing operator entries from ops.txt. The removeOp function lowercases the supplied name but only removes an exactly matching entry, so an operator name stored with non-lowercase letters cannot be revoked using the deop...

CVE-2021-48006

PocketMine-MP versions before 4.0.3 contain a case-sensitivity flaw in the removeOp function. When the deop command is issued, the function lowercases the supplied operator name but then performs an exact-match removal from ops.txt . As a result, any operator whose name was stored with uppercase ...

CVE-2021-48006 PocketMine-MP before 4.0.3 Operator Privilege Escalation via Case Sensitivity

PocketMine-MP before 4.0.3 does not perform case-insensitive matching when removing operator entries from ops.txt. The removeOp function lowercases the supplied name but only removes an exactly matching entry, so an operator name stored with non-lowercase letters cannot be revoked using the deop...

CVE-2021-48006: Improper Handling of Case Sensitivity

PocketMine-MP before 4.0.3 does not perform case-insensitive matching when removing operator entries from ops.txt. The removeOp function lowercases the supplied name but only removes an exactly matching entry, so an operator name stored with non-lowercase letters cannot be revoked using the deop...

CVE-2026-85580 SiYuan before v3.8.2 Path Guard Bypass via Case Mismatch

SiYuan versions before v3.8.2 contain a path guard bypass vulnerability in the MCP file-access handler that uses case-sensitive matching on Linux filesystems. Attackers can read the protected publishAccess.json file by requesting case-variant paths like PublishAccess.json to disclose sensitive...

Improper Validation of Unsafe Equivalence in Input

Overview fastify is an overhead web framework, for Node.js. Affected versions of this package are vulnerable to Improper Validation of Unsafe Equivalence in Input due to incomplete schema case normalization in lib/validation.js when compiling header schemas. An attacker can bypass schema-enforced...

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-2026-84428: Improper Handling of Case Sensitivity

fastify versions before 5.12.2 implement the case-insensitive nature of HTTP header names by lowercasing names in a route's header schema before compiling it, but the transformation is incomplete: it lowercases the properties keys and the root-level required array, and does not lowercase the...

SUSE CVE-2026-84303

gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, the xDS RBAC HTTP filter in internal/xds/httpfilter/rbac/rbac.go does not lowercase header matcher names in normalizeHeaderMatcher even though incoming metadata keys are lowercase. A DENY policy using a mixed-case name such as...

Linux Distros Unpatched Vulnerability : CVE-2026-73270

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Improper Handling of Case Sensitivity vulnerability in Erlang/OTP inets httpd allows a remote unauthenticated attacker to read files inside a modauth protected...

CVE-2026-73476

Improper Handling of Case Sensitivity vulnerability in Drupal External Authentication allows Privilege Escalation. This issue affects External Authentication versions: from 0.0.0 to 2.0.13...

CVE-2026-73476 External Authentication - Moderately critical - Access bypass - SA-CONTRIB-2026-098

Improper Handling of Case Sensitivity vulnerability in Drupal External Authentication allows Privilege Escalation. This issue affects External Authentication versions: from 0.0.0 to 2.0.13...

EUVD-2026-69990

Improper Handling of Case Sensitivity vulnerability in Drupal External Authentication allows Privilege Escalation. This issue affects External Authentication versions: from 0.0.0 to 2.0.13...

CVE-2026-73476 External Authentication - Moderately critical - Access bypass - SA-CONTRIB-2026-098

Improper Handling of Case Sensitivity vulnerability in Drupal External Authentication allows Privilege Escalation. This issue affects External Authentication versions: from 0.0.0 to 2.0.13...

CVE-2026-73476

The Drupal External Authentication module, versions 0.0.0 through 2.0.13 , is vulnerable to Privilege Escalation due to improper handling of case sensitivity. The root cause is the module's failure to ensure exact matching of externally supplied identity values when storing and retrieving authent...

CVE-2026-73476 External Authentication - Moderately critical - Access bypass - SA-CONTRIB-2026-098

Improper Handling of Case Sensitivity vulnerability in Drupal External Authentication allows Privilege Escalation. This issue affects External Authentication versions: from 0.0.0 to 2.0.13...

SUSE CVE-2026-73270

Improper Handling of Case Sensitivity vulnerability in Erlang/OTP inets httpd allows a remote unauthenticated attacker to read files inside a modauth protected directory by requesting them with different casing, on deployments whose filesystem is case-insensitive. modauth:secretpath/3 decides...