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Improper Handling of Highly Compressed Data in APM Server Leading to Persistent Denial of Service (Elastic Apm Server)

CVE-2026-78594
MEDIUM 4.9

At a glance

Source
NVD
EPSS
EPSS 0.50 % · percentile 43 ()
State
PUBLISHED
Published
Updated
Assigner
elastic
NVD status
Analyzed

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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.

Weaknesses (CWE)

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

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 4.9CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:Helastic
CVSS 3.1MEDIUM 4.9CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:HNVD · security@elastic.co (Secondary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Elastic · Apm Serveraffected 8.0.0 ≤ 8.19.19 ; affected 9.0.0 ≤ 9.4.4 ; affected 9.5.0

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD