PT-2026-34591 · Bytedance · Verl

Zast.Ai · Published 2026-04-23 · Updated 2026-04-23 · CVE-2026-6878

Mitre

CVSS v3.1

5.6

Medium

AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

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.

Exploit

Fix

Weakness Enumeration

CWE-264

CWE-265

Related Identifiers

CVE-2026-6878

Affected Products

Verl

References · 5

• 🔥 https://github.com/zast-ai/vulnerability-reports/blob/main/bytedance/verl_rce.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-6878 · Security Note
• https://vuldb.com/vuln/359040 · Note
• https://vuldb.com/submit/795257 · Note
• https://vuldb.com/vuln/359040/cti · Note