GHSA-vmq6-5m68-f53m is a high-severity (CVSS 7.1) Deserialization of Untrusted Data vulnerability in ch.qos.logback:logback-classic. A fix is available for ch.qos.logback:logback-classic — see the affected versions and patch details below.
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for GHSA-vmq6-5m68-f53m.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
ch.qos.logback:logback-classic☕ch.qos.logback:logback-classic☕ch.qos.logback:logback-core☕ch.qos.logback:logback-core☕ch.qos.logback:logback-core☕ch.qos.logback:logback-classicReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
A serialization vulnerability in logback receiver component part of logback allows an attacker to mount a Denial-Of-Service attack by sending poisoned data.
This is only exploitable if logback receiver component is deployed. See https://logback.qos.ch/manual/receivers.html
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | ch.qos.logback:logback-classic | ≥ 1.3.0&&< 1.3.12 | 1.3.12ch.qos.logback:logback-classic:1.3.12 |
| ☕Maven | ch.qos.logback:logback-classic | ≥ 1.4.0&&< 1.4.12 | 1.4.12ch.qos.logback:logback-classic:1.4.12 |
| ☕Maven | ch.qos.logback:logback-core | ≥ 1.3.0&&< 1.3.12 | 1.3.12ch.qos.logback:logback-core:1.3.12 |
| ☕Maven | ch.qos.logback:logback-core | ≥ 1.4.0&&< 1.4.12 | 1.4.12ch.qos.logback:logback-core:1.4.12 |
| ☕Maven | ch.qos.logback:logback-core | all versions | 1.2.13ch.qos.logback:logback-core:1.2.13 |
| ☕Maven | ch.qos.logback:logback-classic | all versions | 1.2.13ch.qos.logback:logback-classic:1.2.13 |
Affected Products
logbackqosDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ch.qos.logback:logback-classic, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update ch.qos.logback:logback-classic to 1.3.12 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-vmq6-5m68-f53m is resolved across your whole dependency graph.
Workarounds
Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
The Logback package vulnerability, posing a risk of denial-of-service through a serialization flaw in its receiver component, is considered a moderate issue due to its potential impact on system availability. While denial-of-service vulnerabilities can be disruptive, the severity is tempered by the fact that they…
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.Source: Red Hat security advisory for GHSA-vmq6-5m68-f53m (CC BY 4.0)
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat AMQ Broker 7 | logback | RHSA-2024:2945 |
| Red Hat Fuse 7.13.0 | logback | RHSA-2024:3354 |
| Red Hat OpenShift Dev Spaces 3 Containers | devspaces/server-rhel8:3.15-3 | RHSA-2024:4631 |
| RHINT Camel-Springboot 4.0.3 | logback | RHSA-2024:0793 |
Frequently Asked Questions
Is GHSA-vmq6-5m68-f53m in your dependencies?
Find it across Maven, including transitive dependencies.