CVE-2026-6878
ByteDance verl grader.py math_equal sandbox
- State
- Published
- Severity
- 6.3 Medium
- Published
- Apr 23, 2026
- Updated
- Apr 23, 2026
- Reserved
- Apr 22, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.3 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 | VulDB |
| 3.1 | 5.6 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R | VulDB |
| 3.0 | 5.6 Medium | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R | VulDB |
| 2.0 | 5.1 Medium | AV:N/AC:H/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
verlByteDance |
|
References
- VDB-359040 | ByteDance verl grader.py math_equal sandboxvdb-entrytechnical-description
- VDB-359040 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- Submit #795257 | Bytedance verl <=0.7.0 Arbitrary Code Executionthird-party-advisory
- https://github.com/zast-ai/vulnerability-reports/blob/main/bytedance/verl_rce.mdexploit
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