CVE-2026-78654

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

Not scored by EPSS

EPSS percentile

Not scored by EPSS

NVD base score

The NVD has published no score for this record

NVD CVSS vector

No NVD score to derive

NVD analysis status

Not recorded

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-08-25 06:00Z1 HR AGO

Last updated

2026-08-25 06:00Z1 HR AGO

Reserved

2026-08-24

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 6.9)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-94Improper Control of Generation of Code ('Code Injection')Base
• CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')Variant

Data version

5.2

Document digest

adc42b8cbfe01ded73d26284288bc2416b95c91b95c24d7a0b6bfc13a23a8a0c

• vuldb.comVDB-394866 | cleverbrush framework/deep deepExtend.ts deepExtend prototype pollutionhttps://vuldb.com/vuln/394866vdb-entrytechnical-description
• vuldb.comVDB-394866 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/vuln/394866/ctisignaturepermissions-required
• vuldb.comCVE-2026-78654 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-78654third-party-advisory
• vuldb.comSubmit #886401 | cleverbrush @cleverbrush/deep (npm) <=4.4.0 Prototype Pollutionhttps://vuldb.com/submit/886401third-party-advisory
• github.comhttps://github.com/cleverbrush/framework/issues/213exploitissue-tracking
• github.comhttps://github.com/cleverbrush/framework/pull/215issue-trackingpatch
• github.comhttps://github.com/cleverbrush/framework/commit/810398c1308c500c3b8b6af380b5a89371389327patch
• github.comhttps://github.com/cleverbrush/framework/releases/tag/%40cleverbrush/async%404.4.1patch
• github.comhttps://github.com/cleverbrush/framework/product