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Not in CISA KEV
HIGH severity

CVE-2023-34614 — jsonij

HIGH

CVE-2023-34614 is a high-severity (CVSS 7.5) Out-of-bounds Write vulnerability in cc.plural:jsonij. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

jsonij vulnerable to stack exhaustion

Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
1 known
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

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.

Exploitation and automatability from CISA’s SSVC triage for CVE-2023-34614.

EPSS Exploitation Probability

via FIRST.org ↗
0.8%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs58th percentile — riskier than 58% of all scored CVEsHighest risk
0.00%0.45%0.90%1.34%0.1%0.8%May 26Sep 26Nov 26

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

1 pkg affected
☕cc.plural:jsonij

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

An issue was discovered jmarsden/jsonij through 0.5.2 allows attackers to cause a denial of service or other unspecified impacts via crafted object that uses cyclic dependencies.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
☕Mavencc.plural:jsonijall versionsNo fix

Affected Products

1 product · 1 configurations
Application
jsonijjsonij_project
≤ 0.5.2
range
Exploits & PoCs
1

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

An issue was discovered jmarsden/jsonij thru 0.5.2 allows attackers to c…

bitbucket.orgNVDJun 2023

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Remediation status

    The records we use list no patched version of cc.plural:jsonij for CVE-2023-34614. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    Stop feeding it untrusted input: reject or quarantine files and payloads from unverified sources until you can upgrade, restrict accepted formats to the ones you actually need, and run the parsing or decoding step in a least-privileged sandbox or short-lived worker so a crash or corrupted read cannot reach the rest of the process.

Frequently Asked Questions

An issue was discovered jmarsden/jsonij through 0.5.2 allows attackers to cause a denial of service or other unspecified impacts via crafted object that uses cyclic dependencies.
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CVE-2023-34614: jsonij DoS (High 7.5)