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Fencer Vulns
high 7.1

CVE-2023-6481 json

Logback "receiver" DOS vulnerability CVE-2023-6378 incomplete fix

published 2023-12-04 2 y ago modified 2026-09-10 1 mo ago also GHSA-gm62-rw4g-vrc4 , EUVD-2023-3212

cvss
7.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

A serialization vulnerability in logback receiver component part of logback version 1.4.13, 1.3.13 and 1.2.12 allows an attacker to mount a Denial-Of-Service attack by sending poisoned data.

Patch / fix

  • maven ch.qos.logback:logback-core 1.2.13, 1.3.14, 1.4.14
  • logback openSUSE Tumbleweed 1.2.13-1.1

opensuse advisories openSUSE-SU-2025:15597-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-6481 updated cvss 7.5

logback: A serialization vulnerability in logback receiver

  • Red Hat build of Apache Camel for Spring Boot 3 logback logback
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat build of Debezium 2 logback logback
    affected: workaround, no fix planned “Will not fix”
  • Red Hat build of OptaPlanner 8 logback logback
    affected: workaround, no fix available
  • Red Hat Data Grid 8 logback logback
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Decision Manager 7 logback logback
    affected: workaround, no fix available
  • Red Hat Integration Camel K 1 logback logback Red Hat JBoss Data Grid 7 logback logback
    affected: workaround, no fix planned “Will not fix”
  • Red Hat JBoss Enterprise Application Platform 6 logback logback, org.keycloak-keycloak-parent org.keycloak-keycloak-parent
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat JBoss Enterprise Application Platform Expansion Pack logback logback Red Hat Process Automation 7 logback logback Red Hat Single Sign-On 7 logback logback
    affected: workaround, no fix planned “Will not fix”
show 8 more
  • Red Hat support for Spring Boot logback logback
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat streams for Apache Kafka logback logback
    affected: workaround, no fix available
  • Red Hat AMQ Broker 7
    fixed: vendor fix RHSA-2024:2945
  • Red Hat Fuse 7.13.0
    fixed: vendor fix RHSA-2024:3354
  • Red Hat OpenShift Serverless 1.31 openshift-serverless-1/client-kn-rhel8 1.10.0-5, openshift-serverless-1/func-utils-rhel8 1.31.1-2, openshift-serverless-1/serving-queue-rhel8 1.10.0-4, openshift-serverless-1/eventing-mtping-rhel8 1.10.0-4, openshift-serverless-1/kourier-control-rhel8 1.10.0-4, openshift-serverless-1/serving-webhook-rhel8 1.10.0-4, +34 more
    fixed: vendor fix RHSA-2024:0843
  • Red Hat RHINT Camel-Springboot 4.0.3
    fixed: vendor fix RHSA-2024:0793
  • Red Hat RHPAM 7.13.5 async
    fixed: vendor fix RHSA-2024:1353
  • Red Hat A-MQ Clients 2 logback logback Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/elasticsearch6-rhel8 Red Hat Migration Toolkit for Applications 6 logback Red Hat Migration Toolkit for Applications 7 logback Red Hat Migration Toolkit for Runtimes logback Red Hat Build of Keycloak logback logback
    +4 more products
    Red Hat build of Quarkus logback-core Red Hat JBoss Enterprise Application Platform 7 logback logback Red Hat JBoss Enterprise Application Platform 8 logback logback Red Hat JBoss Web Server 6 logback logback
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
maven ch.qos.logback:logback-core
>=1.4.13, <1.4.14
>=1.3.13, <1.3.14
>=1.2.12, <1.2.13
1.4.14
1.3.14
1.2.13

Affected products

  • QOS.CH Sarl logback

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.