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Advisory record · GHSA-2mj3-6grc-px38

Filebeat Beats has Buffer Overflow via Malformed Syslog Message or Malicious Tokenizer Pattern in Dissect Configuration

CVSS 6.5 MediumEPSS 0.0019 · 8th percentile

Published by the GitHub Advisory Database at 19 Dec 2025, 00:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/elastic/beats/v7Go>=7.7.0, <8.19.9 || >=9.0.0, <9.1.9 || >=9.2.0, <9.2.3 || <7.0.0-alpha2.0.20251204214633-dd3af18220bf8.19.9, 9.1.9, 9.2.3, 7.0.0-alpha2.0.20251204214633-dd3af18220bf
github.com/elastic/beatsGo<=7.6.2No fixed version yet
Identifiers
GHSA-2mj3-6grc-px38 · CVE-2025-68383 · GO-2025-4252
Weakness (CWE)
CWE-120 · CWE-1284
Tags
Published
19 Dec 2025
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Filebeat (github.com/elastic/beats/v7) versions before 7.0.0-alpha2.0.20251204214633-dd3af18220bf, from 7.7.0 before 8.19.9, from 9.0.0 before 9.1.9, and from 9.2.0 before 9.2.3 are affected, as is github.com/elastic/beats up to 7.6.2 with no fixed version listed. A user who can send a malformed Syslog message or supply a malicious Dissect tokenizer pattern can trigger a buffer overflow and crash the Filebeat process. Upgrade github.com/elastic/beats/v7 to 8.19.9, 9.1.9, 9.2.3, or 7.0.0-alpha2.0.20251204214633-dd3af18220bf or later.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.5 Medium 3.1 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CNA (elastic)
  • CISA KEV Not listed.
  • EPSS 0.0019, the 8th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:14 UTC First seen by agentprime
  2. 31 Oct 2026, 14:14 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.