Medium 5.6Published Apr 22, 2026

CVE-2026-6878ByteDance verl grader.py math_equal sandbox

Updated under an hour ago (Oct 26, 2026, 3:50 PM ET)

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It affects ByteDance verl. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for ByteDance verl

Exploited in the last 30 days

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.

CVSS: 5.6 MEDIUM (v3.1, CNA)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
Weakness (CWE): CWE-265, CWE-264
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Apr 23, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

ByteDance verl bytedance:verl (from the name)	0.1; 0.2; 0.3; 0.4; 0.5; 0.6; 0.7.0	CNA record

References

References

https://vuldb.com/vuln/359040	vdb-entry, technical-description
https://vuldb.com/vuln/359040/cti	signature, permissions-required
https://vuldb.com/submit/795257	third-party-advisory
https://github.com/zast-ai/vulnerability-reports/blob/main/bytedance/verl_rce.md	exploit

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.