CVE-2026-41259 Mastodon: Insufficient verification of email addresses

Mastodon is a free, open-source social network server based on ActivityPub. Prior to v4.5.9, v4.4.16, and v4.3.22, Mastodon allows restricting new user sign-up based on e-mail domain names, and performs basic validation on e-mail addresses, but fails to restrict characters that are interpreted...

CVE-2026-41259 Mastodon: Insufficient verification of email addresses

Mastodon is a free, open-source social network server based on ActivityPub. Prior to v4.5.9, v4.4.16, and v4.3.22, Mastodon allows restricting new user sign-up based on e-mail domain names, and performs basic validation on e-mail addresses, but fails to restrict characters that are interpreted...

CVE-2026-41259 Mastodon: Insufficient verification of email addresses

Mastodon is a free, open-source social network server based on ActivityPub. Prior to v4.5.9, v4.4.16, and v4.3.22, Mastodon allows restricting new user sign-up based on e-mail domain names, and performs basic validation on e-mail addresses, but fails to restrict characters that are interpreted...

CVE-2026-41259

Mastodon is a free, open-source social network server based on ActivityPub. Prior to v4.5.9, v4.4.16, and v4.3.22, Mastodon allows restricting new user sign-up based on e-mail domain names, and performs basic validation on e-mail addresses, but fails to restrict characters that are interpreted...

CVE-2026-41259

CVE-2026-41259 affects Mastodon prior to versions 4.5.9, 4.4.16, and 4.3.22. The issue is insufficient verification of email addresses: Mastodon allows restricting new user sign-up by domain but does not properly handle characters that some mail servers interpret differently. Root cause is incomp...

CVE-2026-41259

Mastodon is a free, open-source social network server based on ActivityPub. Prior to v4.5.9, v4.4.16, and v4.3.22, Mastodon allows restricting new user sign-up based on e-mail domain names, and performs basic validation on e-mail addresses, but fails to restrict characters that are interpreted...

EUVD-2026-25282

Mastodon is a free, open-source social network server based on ActivityPub. Prior to v4.5.9, v4.4.16, and v4.3.22, Mastodon allows restricting new user sign-up based on e-mail domain names, and performs basic validation on e-mail addresses, but fails to restrict characters that are interpreted...

UNC6692 Impersonates IT Help Desk via Microsoft Teams to Deploy SNOW Malware

A previously undocumented threat activity cluster known as UNC6692 has been observed leveraging social engineering tactics via Microsoft Teams to deploy a custom malware suite on compromised hosts. "As with many other intrusions in recent years, UNC6692 relied heavily on impersonating IT help des...

crypto/x509: Incorrect enforcement of email constraints in crypto/x509

A certificate validation flaw has been discovered in the golang crypto/x509 module. When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will not be properly...

Important: Red Hat Security Advisory: rhc-worker-playbook security update

An update for rhc-worker-playbook is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

tecno_xss_hotfix

tecnoxsshotfix Security hotfix module for PrestaShop — patc...

BIT-OAUTH2-PROXY-2026-40574 OAuth2 Proxy has an Authorization Bypass in Email Domain Validation via Malformed Multi-@ Email Claims

OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Prior to 7.15.2, an authorization bypass exists in OAuth2 Proxy as part of the emaildomain enforcement option. An attacker may be able to authenticate with an email claim such as [email protected]@company.com and...

Milesight Cameras

RISK EVALUATION Successful exploitation of these vulnerabilities could crash the device being accessed or allow remote code execution. 2. RECOMMENDED PRACTICES CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Minimize network exposure...

CVE-2026-41232 Froxlor has an Email Sender Alias Domain Ownership Bypass via Wrong Array Index that Allows Cross-Customer Email Spoofing

Froxlor is open source server administration software. Prior to version 2.3.6, in EmailSender::add, the domain ownership validation for full email sender aliases uses the wrong array index when splitting the email address, passing the local part instead of the domain to...

CVE-2026-41232 Froxlor has an Email Sender Alias Domain Ownership Bypass via Wrong Array Index that Allows Cross-Customer Email Spoofing

Froxlor is open source server administration software. Prior to version 2.3.6, in EmailSender::add, the domain ownership validation for full email sender aliases uses the wrong array index when splitting the email address, passing the local part instead of the domain to...

CVE-2026-41232

CVE-2026-41232 (Froxlor) : In Froxlor prior to 2.3.6, EmailSender::add() uses the wrong array index when splitting an email address, passing the local part to validateLocalDomainOwnership() instead of the domain. This makes the domain ownership check pass for non-existent domains, allowing any au...

CVE-2026-41232 Froxlor has an Email Sender Alias Domain Ownership Bypass via Wrong Array Index that Allows Cross-Customer Email Spoofing

Froxlor is open source server administration software. Prior to version 2.3.6, in EmailSender::add, the domain ownership validation for full email sender aliases uses the wrong array index when splitting the email address, passing the local part instead of the domain to...

Mastodon security vulnerabilities

Mastodon is an open-source social networking server based on ActivityPub. Versions of Mastodon prior to 4.5.9, 4.4.16, and 4.3.22 contained security vulnerabilities due to a lack of mechanisms to prevent certain email servers from interpreting characters differently...

PT-2026-34728

Name of the Vulnerable Software and Affected Versions Mastodon versions prior to 4.5.9 Mastodon versions prior to 4.4.16 Mastodon versions prior to 4.3.22 Description Mastodon allows restricting new user sign-up based on e-mail domain names and performs basic validation on e-mail addresses, but i...

CVE-2026-41259: Improper Enforcement of Behavioral Workflow

Mastodon is a free, open-source social network server based on ActivityPub. Prior to v4.5.9, v4.4.16, and v4.3.22, Mastodon allows restricting new user sign-up based on e-mail domain names, and performs basic validation on e-mail addresses, but fails to restrict characters that are interpreted...