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GHSA-h3j8-fr5q-8rfr jfinal

GHSA-h3j8-fr5q-8rfr is a Deserialization of Untrusted Data vulnerability in com.jfinal:jfinal. 2 public exploit references exist, so weaponization risk is real. No vendor fix is recorded yet; mitigation options are listed below.

JFinal Java Deserialization Vulnerability

Also known asCVE-2021-31649
Published
May 24, 2022
Updated
Dec 7, 2024
Affected
1 pkg
Patched
None yet
Exploits
2 known
Exploitation data as of Sep 23, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.8%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs78th percentile — riskier than 78% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Real-World Exposure

1 pkg affected
com.jfinal:jfinal

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

In applications using jfinal 4.9.08 and below, there is a deserialization vulnerability when using redis,may be vulnerable to remote code execute

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
Mavencom.jfinal:jfinalall versionsNo fix
Exploits & PoCs
2

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.jfinal:jfinal, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    No patched version of com.jfinal:jfinal has shipped for GHSA-h3j8-fr5q-8rfr 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 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-h3j8-fr5q-8rfr can be triaged on real exposure rather than presence alone.

Tailored to GHSA-h3j8-fr5q-8rfr. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

In applications using jfinal 4.9.08 and below, there is a deserialization vulnerability when using redis which can lead to remote code execution
O3 Security · Impact-Aware SCA

Is GHSA-h3j8-fr5q-8rfr in your dependencies?

O3 Security finds GHSA-h3j8-fr5q-8rfr across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

GHSA-h3j8-fr5q-8rfr: jfinal RCE | O3 Security