GHSA-w2rr-wvh9-m2m7 — jsonutil
HIGHGHSA-w2rr-wvh9-m2m7 is a high-severity (CVSS 7.5) vulnerability in net.pwall.json:jsonutil. 1 public exploit reference exists, so weaponization risk is real. No vendor fix is recorded yet; mitigation options are listed below.
JSONUtil vulnerable to stack exhaustion
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
Exploitation and automatability from CISA’s SSVC triage for GHSA-w2rr-wvh9-m2m7.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
GHSA-w2rr-wvh9-m2m7 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 379,842 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.
Real-World Exposure
net.pwall.json:jsonutilReal-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
An issue was discovered JSONUtil through 5.0 that allows attackers to cause a denial of service or other unspecified impacts via crafted objects that deeply nested structures.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | net.pwall.json:jsonutil | all versions | No fix |
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 dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for net.pwall.json:jsonutil, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
No patched version of net.pwall.json:jsonutil has shipped for GHSA-w2rr-wvh9-m2m7 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.
Frequently Asked Questions
Is GHSA-w2rr-wvh9-m2m7 in your dependencies?
Find it across Maven, including transitive dependencies.