CVE-2024-23449Network attack vector

Ingest-node crash via uncaught PDF parser error

Published Mar 29, 2024 · Updated Aug 12, 2024

Uncaught exception in Elasticsearch 8.4.0 through 8.11.0 allows remote authenticated users to crash an ingest node via an encrypted PDF. TikaImpl.parse leaves a Bouncy Castle LinkageError from public-key-encrypted PDFs uncaught, allowing it to escape attachment processing and terminate the node. The REST request requires low-privilege authentication and a configured attachment pipeline; password-encrypted and unencrypted PDFs do not trigger the crash.

CVSS severity4.3
Medium
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Uncaught exception in Elasticsearch 8.4.0 through 8.11.0 allows remote authenticated users to crash an ingest node via an encrypted PDF. TikaImpl.parse leaves a Bouncy Castle LinkageError from public-key-encrypted PDFs uncaught, allowing it to escape attachment processing and terminate the node. The REST request requires low-privilege authentication and a configured attachment pipeline; password-encrypted and unencrypted PDFs do not trigger the crash.

The record

CVE
CVE-2024-23449
Published
Mar 29, 2024
Updated
Aug 12, 2024
Vendor
Elastic
Product
Elasticsearch
Classifications
CWE-248, CAPEC-100, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.4.0 <8.11.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Elastic · Elasticsearchversion=8.4.0 <8.11.1

Published CVSS scores

4.3ElasticCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
5.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-248Uncaught Exception
CAPEC-100Overflow Buffers
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo