RCE in Cleverbrush Deep
CVE-2026-78654
A vulnerability has been found in cleverbrush framework and deep up to 4.4.0. This impacts the function deepExtend of the file libs/deep/src/deepExtend.ts. The manipulation leads to improperly controlled modification of object prototype attributes. Remote exploitation of the attack is possible. The exploit has been disclosed to the public and may be used. Upgrading to version 4.4.1 will fix this issue. The identifier of the patch is 810398c1308c500c3b8b6af380b5a89371389327. You should upgrade the affected component.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.007 (52.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003
Affected products
- Cleverbrush Deep — versions 4.0, 4.1, 4.2
- Cleverbrush Framework — versions 4.0, 4.1, 4.2
Weakness classification (CWE)
References
- github.com/cleverbrush/framework/ (product)
- github.com/cleverbrush/framework/commit/810398c1308c500c3b8b6af380b5a89371389327 (patch)
- github.com/cleverbrush/framework/issues/213 (issue-tracking, exploit)
- github.com/cleverbrush/framework/pull/215 (issue-tracking, patch)
- github.com/cleverbrush/framework/releases/tag/@cleverbrush/async@4.4.1 (patch)
- vuldb.com/cve/CVE-2026-78654 (third-party-advisory)
- vuldb.com/submit/886401 (third-party-advisory)
- vuldb.com/vuln/394866 (technical-description, vdb-entry)
- vuldb.com/vuln/394866/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-78654?
- CVE-2026-78654 is a high-severity vulnerability in Cleverbrush Deep, classified under Code Injection. CVSS score: 7.3/10. Published 2026-08-25.
- How severe is CVE-2026-78654?
- High severity. CVSS v3 base score is 7.3 out of 10.