CVE-2026-78594
Improper Handling of Highly Compressed Data in APM Server Leading to Persistent Denial of Service
CVSS Score
4.9
EPSS Score
0.0%
EPSS Percentile
0th
Improper Handling of Highly Compressed Data (CWE-409) in APM Server can lead to a persistent denial of service via Excessive Allocation (CAPEC-130). An authenticated user with write access to source map content could store specially crafted, highly compressed content that exhausts the memory available to APM Server when it is later processed, terminating the process. The condition recurs on every restart until the stored content is removed.
| CWE | CWE-409 |
| Vendor | elastic |
| Product | apm server |
| Published | Sep 2, 2026 |
| Last Updated | Sep 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Elastic / Apm Server
8.0.0 ≤ 8.19.19 9.0.0 ≤ 9.4.4 9.5.0