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.
CVE-2026-6878
Score 5.6 from GitHub Security Advisory (severity: LOW) published 2026-04-23. NVD baseline CVSS 5.6; sources differ by 0.0.
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.6
- EG Score
- 5.6(medium)
- EPSS
- 25.5%
- KEV
- Not listed
Published
April 23, 2026
Last Modified
April 29, 2026
References (4)
Patch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| pip | verl | — | ghsa |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| verl | 0.1 ... 0.7.1 (15 versions) | — | — |
Weakness Classification(3)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 9× in last 7d / 43× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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- 2026-06-10 03:11 UTCGHSA enrichment
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- 2026-06-05 16:39 UTCGHSA enrichment
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- 2026-05-20 16:04 UTCEG score recompute
- 2026-05-20 16:04 UTCGHSA enrichment
- 2026-05-20 11:22 UTCEPSS rescore
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Frequently asked(5)
What is CVE-2026-6878?
When was CVE-2026-6878 disclosed?
Is CVE-2026-6878 actively exploited?
What is the CVSS score of CVE-2026-6878?
How do I remediate CVE-2026-6878?
Dependency Blast Radius
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