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Advisory record · GHSA-vmq6-5m68-f53m

logback serialization vulnerability

CVSS 7.1 HighEPSS 0.0090 · 60th percentile

Published by the GitHub Advisory Database at 29 Nov 2023, 12:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
ch.qos.logback:logback-classicMaven>=1.3.0, <1.3.12 || >=1.4.0, <1.4.12 || <1.2.131.3.12, 1.4.12, 1.2.13
ch.qos.logback:logback-coreMaven>=1.3.0, <1.3.12 || >=1.4.0, <1.4.12 || <1.2.131.3.12, 1.4.12, 1.2.13
Identifiers
GHSA-vmq6-5m68-f53m · CVE-2023-6378
Weakness (CWE)
CWE-502
Tags
Published
29 Nov 2023
Updated
10 Sept 2026

Machine-written summary

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

logback-classic and logback-core are vulnerable to a serialization flaw in the logback receiver component, affecting versions from 1.3.0 before 1.3.12, from 1.4.0 before 1.4.12, and before 1.2.13. An attacker who can send data to a deployed logback receiver can cause a denial-of-service by sending poisoned data. The source gives few details beyond this. Upgrade logback-classic and logback-core to 1.3.12, 1.4.12, or 1.2.13 depending on your release line.

Written 2 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
7.1 High 3.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H CNA (NCSC.ch)
  • CISA KEV Not listed.
  • EPSS 0.0090, the 60th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:18 UTC First seen by agentprime
  2. 31 Oct 2026, 14:18 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.