What is GHSA-5jf2-hccc-p8fm?

GHSA-5jf2-hccc-p8fm is a security advisory published by GitHub Security Advisories with Medium severity. Improper Handling of Highly Compressed Data (CWE-409) in APM Server can lead to a persistent...

Which CVE IDs does GHSA-5jf2-hccc-p8fm cover?

GHSA-5jf2-hccc-p8fm covers the following CVE IDs: CVE-2026-78594. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-5jf2-hccc-p8fm?

GHSA-5jf2-hccc-p8fm has a CVSS v3 base score of 4.9, published by GitHub Security Advisories.

GHSA-5jf2-hccc-p8fmMediumCVSS 4.9

Improper Handling of Highly Compressed Data (CWE-409) in APM Server can lead to a persistent...

Vendor

GitHub Security Advisories

Published

September 2, 2026

Last Modified

September 2, 2026

🔗 CVE IDs covered (1)

CVE-2026-78594 →

📋 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.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-78594
https://discuss.elastic.co/t/apm-server-8-19-20-9-4-5-9-5-1-security-update-esa-2026-152/390110
https://github.com/advisories/GHSA-5jf2-hccc-p8fm