Elastic Apm Server
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By the Year
In 2026 there have been 1 vulnerability in Elastic Apm Server with an average score of 4.9 out of ten. Last year, in 2025 Apm Server had 1 security vulnerability published. At the current rates, it appears that the number of vulnerabilities last year and this year may equal out.
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2026 | 1 | 4.90 |
| 2025 | 1 | 0.00 |
| 2024 | 2 | 7.00 |
| 2023 | 1 | 7.50 |
It may take a day or so for new Apm Server vulnerabilities to show up in the stats or in the list of recent security vulnerabilities. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Elastic Apm Server Security Vulnerabilities
APM Server Denial via Highly Compressed Source Map (CWE409/CAPEC130)
CVE-2026-78594
4.9 - Medium
- September 02, 2026
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.
Data Amplification
Elastic APM Server Log Info Disclosure via Failed Bulk Index
CVE-2024-11994
- May 01, 2025
APM server logs could contain parts of the document body from a partially failed bulk index request. Depending on the nature of the document, this could disclose sensitive information in APM Server error logs.
Elastic APM Server leaks document body via failed bulk index logs
CVE-2024-37286
6.5 - Medium
- August 03, 2024
APM server logs contain document body from a partially failed bulk index request. For example, in case of unavailable_shards_exception for a specific document, since the ES response line contains the document body, and that APM server logs the ES response line on error, the document is effectively logged.
Insertion of Sensitive Information into Log File
Elastic APM Server: Log Leak from ElasticSearch Error Response
CVE-2024-23448
7.5 - High
- February 07, 2024
An issue was discovered whereby APM Server could log at ERROR level, a response from Elasticsearch indicating that indexing the document failed and that response would contain parts of the original document. Depending on the nature of the document that the APM Server attempted to ingest, this could lead to the insertion of sensitive or private information in the APM Server logs.
Insertion of Sensitive Information into Log File
Elastic Beats: TLS Client IP SAN Validation Failure (CVE-2023-31421)
CVE-2023-31421
7.5 - High
- October 26, 2023
It was discovered that when acting as TLS clients, Beats, Elastic Agent, APM Server, and Fleet Server did not verify whether the server certificate is valid for the target IP address; however, certificate signature validation is still performed. More specifically, when the client is configured to connect to an IP address (instead of a hostname) it does not validate the server certificate's IP SAN values against that IP address and certificate validation fails, and therefore the connection is not blocked as expected.
Improper Certificate Validation
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