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CVE-2026-50734

Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ Client, Apache ActiveMQ, Apache ActiveMQ All. An unauthenticated network attacker can cause a broker DoS by sending a crafted WireFormatInfo frame with a malicious large size value. The value is not validate and causes the broker to attempt allocation during pre-auth negotiation which can trigger OOM and crash the broker. This issue affects Apache ActiveMQ Client: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5856321be0efb758bb251975fd924da632f7552bd7524836c6d70c0c16bc3a52
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 3 assertions

{"defaultStatus":"unaffected","packageName":"org.apache.activemq:activemq-all","product":"Apache ActiveMQ All","vendor":"Apache Software Foundation","versions":[{"lessThan":"5.19.8","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.2.7","status":"affected","version":"6.0.0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d5043ce19f971ea42884976aea7fd742f7bbee7f69592cad72135f7ad3804750 · sha256:23d9de4a7a45e20a… · /containers/cna/affected/2

{"defaultStatus":"unaffected","packageName":"org.apache.activemq:apache-activemq","product":"Apache ActiveMQ","vendor":"Apache Software Foundation","versions":[{"lessThan":"5.19.8","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.2.7","status":"affected","version":"6.0.0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d5043ce19f971ea42884976aea7fd742f7bbee7f69592cad72135f7ad3804750 · sha256:23d9de4a7a45e20a… · /containers/cna/affected/1

{"collectionURL":"https://repo.maven.apache.org/maven2","defaultStatus":"unaffected","packageName":"org.apache.activemq:activemq-client","product":"Apache ActiveMQ Client","vendor":"Apache Software Foundation","versions":[{"lessThan":"5.19.8","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.2.7","status":"affected","version":"6.0.0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d5043ce19f971ea42884976aea7fd742f7bbee7f69592cad72135f7ad3804750 · sha256:23d9de4a7a45e20a… · /containers/cna/affected/0

Affected products and versions

3 source assertions
{"defaultStatus":"unaffected","packageName":"org.apache.activemq:activemq-all","product":"Apache ActiveMQ All","vendor":"Apache Software Foundation","versions":[{"lessThan":"5.19.8","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.2.7","status":"affected","version":"6.0.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d5043ce19f971ea42884976aea7fd742f7bbee7f69592cad72135f7ad3804750 · sha256:23d9de4a7a45e20a… · /containers/cna/affected/2
{"defaultStatus":"unaffected","packageName":"org.apache.activemq:apache-activemq","product":"Apache ActiveMQ","vendor":"Apache Software Foundation","versions":[{"lessThan":"5.19.8","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.2.7","status":"affected","version":"6.0.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d5043ce19f971ea42884976aea7fd742f7bbee7f69592cad72135f7ad3804750 · sha256:23d9de4a7a45e20a… · /containers/cna/affected/1
{"collectionURL":"https://repo.maven.apache.org/maven2","defaultStatus":"unaffected","packageName":"org.apache.activemq:activemq-client","product":"Apache ActiveMQ Client","vendor":"Apache Software Foundation","versions":[{"lessThan":"5.19.8","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.2.7","status":"affected","version":"6.0.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d5043ce19f971ea42884976aea7fd742f7bbee7f69592cad72135f7ad3804750 · sha256:23d9de4a7a45e20a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d5043ce19f971ea42884976aea7fd742f7bbee7f69592cad72135f7ad3804750 · sha256:23d9de4a7a45e20a… · /containers/adp/1/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-789","description":"CWE-789 Memory Allocation with Excessive Size Value","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d5043ce19f971ea42884976aea7fd742f7bbee7f69592cad72135f7ad3804750 · sha256:23d9de4a7a45e20a… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/06/29/10"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d5043ce19f971ea42884976aea7fd742f7bbee7f69592cad72135f7ad3804750 · sha256:23d9de4a7a45e20a… · /containers/adp/0/references/0
{"tags":["vendor-advisory"],"url":"https://lists.apache.org/thread/nxso951fnvf72qf9m475mpz4yf931xk0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d5043ce19f971ea42884976aea7fd742f7bbee7f69592cad72135f7ad3804750 · sha256:23d9de4a7a45e20a… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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