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Maven
Not in CISA KEV
CRITICAL severity

GHSA-f7vh-qwp3-x37m

CRITICAL

GHSA-f7vh-qwp3-x37m is a critical-severity (CVSS 9.8) Deserialization of Untrusted Data vulnerability in log4j:log4j. O3 Security confirms whether GHSA-f7vh-qwp3-x37m is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Deserialization of Untrusted Data in Apache Log4j

Also known asCVE-2022-23307
Published
Jan 19, 2022
Updated
Nov 8, 2023
Affected
2 pkgs
Patched
None yet
Exploits
None indexed
Exploitation data as of Nov 8, 2023 · OSV.dev, NVD, FIRST.org (EPSS)

Real-World Exposure

2 pkgs affected
log4j:log4jorg.zenframework.z8.dependencies.commons:log4j-1.2.17

Real-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

CVE-2020-9493 identified a deserialization issue that was present in Apache Chainsaw. Prior to Chainsaw V2.0 Chainsaw was a component of Apache Log4j 1.2.x where the same issue exists.

Users are advised to migrate from log4j:log4j to org.apache.logging.log4j:log4j for an updated version of the library.

Affected Packages

2 total
EcosystemPackageVulnerable rangeFix
Mavenlog4j:log4jall versionsNo fix
Mavenorg.zenframework.z8.dependencies.commons:log4j-1.2.17all versionsNo fix

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for log4j:log4j. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Remediation status

    No patched version of log4j:log4j has shipped for GHSA-f7vh-qwp3-x37m yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.

  3. Mitigate without a patch

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-f7vh-qwp3-x37m is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-f7vh-qwp3-x37m. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

CVE-2020-9493 identified a deserialization issue that was present in Apache Chainsaw. Prior to Chainsaw V2.0 Chainsaw was a component of Apache Log4j 1.2.x where the same issue exists. Users are advised to migrate from `log4j:log4j` to `org.apache.logging.log4j:log4j` for an updated version of the library.
O3 Security · Impact-Aware SCA

Is GHSA-f7vh-qwp3-x37m in your dependencies?

O3 detects GHSA-f7vh-qwp3-x37m across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

GHSA-f7vh-qwp3-x37m: Deserialization of… | O3 Security