CVE•Published 2026-09-02•Modified 2026-09-03•0 articles on news•5 live references•NVD data

CVE-2026-78594Elastic · Apm_server

Vulnerability data via NVD (ingested)

CVSS v3.1

4.9

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

EPSS percentile

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Weaknesses (CWE)

CWE-409Improper Handling of Highly Compressed Data (Data Amplification)

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.

Timeline

Published 2026-09-02

Modified 2026-09-03

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-78594

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Elastic Apm Server"

All exposed Elastic Apm Server instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Apm Server"

HTTP body or banner mentions "Apm Server" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-78594