CVE-2026-44255 Wazuh: Username Enumeration via Timing Side-Channel

Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.0.0 until 4.14.6 and 5.0.0-beta2, AuthenticationManager.checkuser in framework/wazuh/rbac/orm.py performs checkpasswordhash only when the supplied username exists. A nonexistent username returns...

PT-2026-78264

A flaw has been found in SourceCodester Simple Online Food Ordering System 1.0. The impacted element is an unknown function of the file /admin/ajax.php?action=login. Executing a manipulation of the argument Username can lead to sql injection. The attack may be performed from remote. The exploit h...

CVE-2026-45115

MyBB is free and open source forum software. Prior to 1.8.40, the Buddy/Ignore component does not sanitize usernames correctly, allowing attackers to perform JavaScript code injection through a specially crafted username. The User CP Buddy/Ignore list and the Select Buddies list in Private Messag...

libssh: libssh: information disclosure via ProxyCommand %r username expansion

A flaw was found in libssh. A malicious username expanded through %r in ProxyCommand handling can inject shell metacharacters, exposing environment variables and causing unintended shell behavior...

DEBIAN-CVE-2026-63650

OpenVPN 2.7alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field...

CVE-2026-63650

OpenVPN 2.7alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by ignoring the configured X.509 username identity lookup field...

Fabric CA Developer's Guide: LDAP Injection via Unescaped Username in GetUser Filter

When fabric-ca is configured with an LDAP backend, the username from HTTP Basic authentication is included in an LDAP uid search filter without proper escaping. An unauthenticated attacker with network access to the CA enrollment endpoint could exploit this to perform LDAP injection before passwo...

PT-2026-72124

Name of the Vulnerable Software and Affected Versions OpenVPN versions 2.7 alpha1 through 2.7.5 Description When using mbedTLS, remote authenticated users can be misidentified because the system ignores the configured X.509 username identity lookup field. X.509 is a standard for public key...

CVE-2026-72643

Kibana Agent Builder determines whether a caller owns a private agent by comparing a stable user identifier when one is recorded, and falling back to a comparison of the username when it is not. A username is not unique across Elasticsearch authentication realms, so two distinct principals that...

EUVD-2026-58288

Kibana Agent Builder determines whether a caller owns a private agent by comparing a stable user identifier when one is recorded, and falling back to a comparison of the username when it is not. A username is not unique across Elasticsearch authentication realms, so two distinct principals that...

CVE-2026-72643 Incorrect Authorization in Kibana Agent Builder Leading to Disclosure and Tampering of Private Agents

Kibana Agent Builder determines whether a caller owns a private agent by comparing a stable user identifier when one is recorded, and falling back to a comparison of the username when it is not. A username is not unique across Elasticsearch authentication realms, so two distinct principals that...

CVE-2026-72643

Kibana Agent Builder determines whether a caller owns a private agent by comparing a stable user identifier when one is recorded, and falling back to a comparison of the username when it is not. A username is not unique across Elasticsearch authentication realms, so two distinct principals that...

CVE-2026-72643

CVE-2026-72643 describes an Incorrect Authorization in Kibana Agent Builder where a caller’s ownership check uses a stable user identifier or falls back to username, which is not unique across Elasticsearch realms. This allows disclosing the configuration/instructions of an agent the caller does ...

CVE-2026-73555 vLLM: Unauthenticated Internal Path and Username Disclosure via Validation Error Messages

vLLM is an inference and serving engine for large language models. Prior to 0.26.0, the validationexceptionhandler in vllm/entrypoints/openai/serverutils.py converts FastAPI RequestValidationError objects with strexc, and sanitizemessage in vllm/entrypoints/utils.py does not remove traceback-styl...

CVE-2026-73555 vLLM: Unauthenticated Internal Path and Username Disclosure via Validation Error Messages

vLLM is an inference and serving engine for large language models. Prior to 0.26.0, the validationexceptionhandler in vllm/entrypoints/openai/serverutils.py converts FastAPI RequestValidationError objects with strexc, and sanitizemessage in vllm/entrypoints/utils.py does not remove traceback-styl...

CVE-2026-6791

A flaw was found in glibc. When processing paths that start with a tilde followed by a username, the wordexp function can be forced to allocate an excessive amount of memory on the program's stack. A remote attacker could exploit this by providing a very long username, leading to a stack exhausti...

CVE-2026-72537 Authentik Security authentik - Privilege Escalation

A privilege escalation vulnerability in Authentik Security authentik through 2026.5.6 allows an attacker with a source-scoped SCIM provisioning token to take over any user account including superusers by provisioning a SCIM user that matches an existing local user by username. The SCIM user inges...

CVE-2026-72730

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, the Rich Text Editor rendered a chat-transcript username as HTML, allowing stored cross-site scripting. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0...

CVE-2026-72730

Discourse stores a chat-transcript username as HTML in the Rich Text Editor, enabling stored XSS for versions prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0. Fixed in those listed versions. CVSS 3.1 base score 8.7 (NETWORK, LOW complexity, LOW privileges, USER interaction required). No explo...

EUVD-2026-55670

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, the Rich Text Editor rendered a chat-transcript username as HTML, allowing stored cross-site scripting. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0...