CVE-2026-78594

Source
https://cve.org/CVERecord?id=CVE-2026-78594
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-78594.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-78594
Published
2026-09-02T14:43:13Z
Modified
2026-09-05T03:48:02Z
Severity
  • 4.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Improper Handling of Highly Compressed Data in APM Server Leading to Persistent Denial of Service
Details

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.

Database specific
{
    "cna_assigner": "elastic",
    "cwe_ids": [
        "CWE-409"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78594.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "8.0.0"
                },
                {
                    "last_affected": "8.19.19"
                },
                {
                    "introduced": "9.0.0"
                },
                {
                    "last_affected": "9.4.4"
                },
                {
                    "introduced": "9.5.0"
                },
                {
                    "last_affected": "9.5.0"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/elastic/apm-server

Affected ranges

Type
GIT
Repo
https://github.com/elastic/apm-server
Events
Database specific
Show details
{
    "cpe": [
        "cpe:2.3:a:elastic:apm_server:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:elastic:apm_server:9.5.0:*:*:*:*:*:*:*"
    ],
    "extracted_events": [
        {
            "introduced": "8.0.0"
        },
        {
            "fixed": "8.19.20"
        },
        {
            "introduced": "9.0.0"
        },
        {
            "fixed": "9.4.5"
        },
        {
            "introduced": "9.5.0"
        },
        {
            "last_affected": "9.5.0"
        }
    ],
    "source": [
        "CPE_RANGE",
        "CPE_STRING"
    ]
}

Affected versions

9.*
9.5.0
v9.*
v9.5.0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-78594.json"