Apache ActiveMQ Improper Input Validation Vulnerability (CVE-2026-34197)
Severity: high · Patch status: unknown · Since 2026-04-16 · CVE-2026-34197
Apache ActiveMQ contains an improper input validation vulnerability that allows for code injection. CISA added CVE-2026-34197 to its Known Exploited Vulnerabilities catalog on Apr 16, 2026, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by Apr 30, 2026 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch