ByteDance verl grader.py math_equal sandbox_CVE-2026-6878

6.3 / 10

MEDIUM

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Description

A vulnerability was identified in ByteDance verl up to 0.7.0. Affected is the function math_equal of the file prime_math/grader.py. The manipulation leads to sandbox issue. It is possible to initiate the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Basic Information

ID CVE-2026-6878

Source VulDB

Published Apr 23, 2026 at 00:00

Affected Product

Vendor ByteDance

Product verl

Version 0.1

Affected Versions ByteDance verl 0.1
ByteDance verl 0.2
ByteDance verl 0.3
ByteDance verl 0.4
ByteDance verl 0.5
ByteDance verl 0.6
ByteDance verl 0.7.0

CWE Classification

CWE-265 CWE-264

References

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    "published": "2026-04-23T00:00:20.300Z",
    "modified": "2026-04-23T00:00:20.300Z",
    "type": "cve",
    "title": "ByteDance verl grader.py math_equal sandbox",
    "source": "VulDB",
    "references": "https://vuldb.com/vuln/359040\nhttps://vuldb.com/vuln/359040/cti\nhttps://vuldb.com/submit/795257\nhttps://github.com/zast-ai/vulnerability-reports/blob/main/bytedance/verl_rce.md",
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