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CVE-2026-78594

nvd nist
Published: Sep 2, 2026Modified: Sep 3, 2026

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4.9
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Exploitability: 1.2 / Impact: 3.6
Source: security@elastic.co (Secondary)

Description

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.

Affected (3)

Products: Elastic: Apm Server
Elastic
1 product
Apm Server
Configuration A
3 vulnerable
Vulnerable SoftwareAffected Versions
Elastic
Apm Server
From 8.0.0 to 8.19.20
Apm Server
From 9.0.0 to 9.4.5
Apm Server
Version 9.5.0

Related CWEs

CWE-409
Improper Handling of Highly Compressed Data (Data Amplification)
The product does not handle or incorrectly handles a compressed input with a very high compression ratio that produces a large output.

References (1)

Source: security@elastic.co
Vendor AdvisoryMitigation

Timeline

No history available yet.