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Known exploited vulnerability · CISA KEV

CVE-2016-3088: Apache ActiveMQ Improper Input Validation Vulnerability

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

CVE-2016-3088

Exploited in the wild. Fix this first.

CISA added it to the Known Exploited Vulnerabilities catalog on 2022-02-10: attackers are using it right now.

CISA KEV
Listed
Added 2022-02-10 · federal fix-by 2022-08-10
EPSS (30 days)
99%
Higher than 99.9% of CVEs · 2026-11-01
CVSS v3.1
9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What CISA says

Apache ActiveMQ Improper Input Validation Vulnerability

Apply updates per vendor instructions.

NVD description · published 2016-06-01

The Fileserver web application in Apache ActiveMQ 5.x before 5.14.0 allows remote attackers to upload and execute arbitrary files via an HTTP PUT followed by an HTTP MOVE request.

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How to check if you are exposed to CVE-2016-3088

  1. Find every Apache ActiveMQ system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
  2. Compare each version with the fixed versions in the vendor advisory. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
  3. Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2016-3088.

US federal agencies had to fix this by 2022-08-10. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.

Affected versions

Versions the National Vulnerability Database lists as vulnerable to CVE-2016-3088. Check the vendor advisory for the exact fixed builds before you sign anything off.

ProductVulnerable versions
Apache Activemqfrom 5.0.0 before 5.14.0

Timeline

  1. · Published in the National Vulnerability Database
  2. · Added to CISA's Known Exploited Vulnerabilities catalog, 2,080 days after it was published
  3. · Fix-by date for US federal agencies, passed 1,544 days ago

Weakness type

More exploited Apache vulnerabilities

CISA lists 41 exploited Apache vulnerabilities. The closest matches:

Keep going

Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.

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