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Vulnerability record · CVE-2024-29021 · published 18 April 2024

CVE-2024-29021: Server-side request forgery (SSRF) vulnerability

Judge0 is an open-source online code execution system. The default configuration of Judge0 leaves the service vulnerable to a sandbox escape via Server Side Request Forgery (SSRF). This allows an attacker with sufficient access to the Judge0 API to obtain unsandboxed code execution as root on the target machine. This vulnerability is fixed in 1.13.1.

9.0 CVSS 3.1 Critical EPSS 20% · top 2.6% CWE-918 · Server-side request forgery (SSRF)CWE-1393 · CWE-1393 Deferred
9.0CVSS 3.1 base score
20%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Judge0 is an open-source online code execution system. The default configuration of Judge0 leaves the service vulnerable to a sandbox escape via Server Side Request Forgery (SSRF). This allows an attacker with sufficient access to the Judge0 API to obtain unsandboxed code execution as root on the target machine. This vulnerability is fixed in 1.13.1.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

References

LinkTags
https://github.com/judge0/judge0/blob/ad66f77b131dbbebf2b9ff8083dca9a68680b3e5/app/jobs/isolate_job.rb#L203-L230
https://github.com/judge0/judge0/security/advisories/GHSA-q7vg-26pg-v5hr
https://github.com/judge0/judge0/blob/ad66f77b131dbbebf2b9ff8083dca9a68680b3e5/app/jobs/isolate_job.rb#L203-L230
https://github.com/judge0/judge0/security/advisories/GHSA-q7vg-26pg-v5hr

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Source: NIST National Vulnerability Database (record CVE-2024-29021), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.