Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
3 results
Feb 5, 2026SmarterTools SmarterMail Missing Authentication for Critical Function VulnerabilityCVE-2026-24423 · Other software · SmarterTools · reported by VulnCheckExploitedRansomwareCritical 9.3
SmarterTools SmarterMail contains a missing authentication for critical function vulnerability in the ConnectToHub API method. This could allow the attacker to point the SmarterMail instance to a malicious HTTP server which serves the malicious OS command and could lead to command execution.
- Product
- SmarterMail
- On CISA’s list since
- Feb 5, 2026 (federal fix deadline Feb 26, 2026)
- What to do
- Attackers are using this now. Install SmarterTools’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD recordCISA catalogcode-white.comsmartertools.com
Jan 26, 2026SmarterTools SmarterMail Authentication Bypass Using an Alternate Path or Channel VulnerabilityCVE-2026-23760 · Other software · SmarterTools · reported by VulnCheckExploitedRansomwareCritical 9.3
SmarterTools SmarterMail contains an authentication bypass using an alternate path or channel vulnerability in the password reset API. The force-reset-password endpoint permits anonymous requests and fails to verify the existing password or a reset token when resetting system administrator accounts. This could allow an unauthenticated attacker to supply a target administrator username and a new password to reset the account, resulting in full administrative compromise of the SmarterMail instance.
- Product
- SmarterMail
- On CISA’s list since
- Jan 26, 2026 (federal fix deadline Feb 16, 2026)
- What to do
- Attackers are using this now. Install SmarterTools’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD recordCISA catalogcode-white.comlabs.watchtowr.com
Jan 26, 2026SmarterTools SmarterMail Unrestricted Upload of File with Dangerous Type VulnerabilityCVE-2025-52691 · Other software · SmarterTools · reported by 5f57b9bf-260d-4433-bf07-b6a79e9bb7d4ExploitedRansomwareCritical 10
SmarterTools SmarterMail contains an unrestricted upload of file with dangerous type vulnerability that could allow an unauthenticated attacker to upload arbitrary files to any location on the mail server, potentially enabling remote code execution.
- Product
- SmarterMail
- On CISA’s list since
- Jan 26, 2026 (federal fix deadline Feb 16, 2026)
- What to do
- Attackers are using this now. Install SmarterTools’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD recordCISA catalogcsa.gov.sggithub.com
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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