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
Apr 16, 2026Apache ActiveMQ Improper Input Validation VulnerabilityCVE-2026-34197 · Websites & servers · Apache · reported by security@apache.orgExploitedHigh 8.8
Apache ActiveMQ contains an improper input validation vulnerability that allows for code injection.
- Product
- ActiveMQ
- On CISA’s list since
- Apr 16, 2026 (federal fix deadline Apr 30, 2026)
- What to do
- Attackers are using this now. Install Apache’s update today. 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 catalogactivemq.apache.orgopenwall.com
Nov 2, 2023Apache ActiveMQ Deserialization of Untrusted Data VulnerabilityCVE-2023-46604 · Websites & servers · Apache · reported by security@apache.orgExploitedRansomwareCritical 10
Apache ActiveMQ contains a deserialization of untrusted data vulnerability that may allow a remote attacker with network access to a broker to run shell commands by manipulating serialized class types in the OpenWire protocol to cause the broker to instantiate any class on the classpath.
- Product
- ActiveMQ
- On CISA’s list since
- Nov 2, 2023 (federal fix deadline Nov 23, 2023)
- What to do
- Attackers are using this now. Install Apache’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 catalogseclists.orgactivemq.apache.org
Feb 10, 2022Apache ActiveMQ Improper Input Validation VulnerabilityCVE-2016-3088 · Websites & servers · Apache · reported by Red HatExploitedCritical 9.8
The Fileserver web application in Apache ActiveMQ allows remote attackers to upload and execute arbitrary files via an HTTP PUT followed by an HTTP MOVE request
- Product
- ActiveMQ
- On CISA’s list since
- Feb 10, 2022 (federal fix deadline Aug 10, 2022)
- What to do
- Attackers are using this now. Install Apache’s update today. 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 catalogactivemq.apache.orgrhn.redhat.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.
Weekly security brief
The flaws that hit local websites, every Friday.
One short email: what got exploited this week, which WordPress plugins broke, and what to check. Unsubscribe in one click.
Tell us what you're building.
A website, your marketing, a security check, an app, or the thing you've been running out of a spreadsheet for three years. A few lines is plenty.
Not ready to talk yet? Run the free website check and see what Google sees.