Authenticated classpath resource loading via key traversal
Published Apr 7, 2026 · Updated Apr 7, 2026
Classpath path traversal in Apache ActiveMQ before 5.19.3 and 6.0.0 through 6.2.1 allows remote authenticated users to load classpath resources. STOMP consumer creation and Web Console message browsing concatenate an attacker-controlled key into a classpath resource name without blocking traversal segments. Reachability requires an authenticated user; the disclosed result is unintended classpath resource loading, and further impact requires chaining with another flaw.
Summary
What happened
Classpath path traversal in Apache ActiveMQ before 5.19.3 and 6.0.0 through 6.2.1 allows remote authenticated users to load classpath resources. STOMP consumer creation and Web Console message browsing concatenate an attacker-controlled key into a classpath resource name without blocking traversal segments. Reachability requires an authenticated user; the disclosed result is unintended classpath resource loading, and further impact requires chaining with another flaw.
The record
- CVE
- CVE-2026-33227
- Published
- Apr 7, 2026
- Updated
- Apr 7, 2026
- Vendor
- The Apache Software Foundation
- Product
- Apache ActiveMQ Web
- Classifications
- CWE-22
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 7, 2026CVE publishedPublication date reported by the CVE source.
- Apr 7, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <5.19.3
- Affected versionversion=6.0.0 <6.2.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo