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CVE-2026-78654

cleverbrush framework/deep deepExtend.ts deepExtend prototype pollution

No known exploitation. EPSS puts it in the 53rd percentile. Fixed in 4.4.1.

CVSS 3.17.3HighEPSS percentile53rd0.7% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix4.4.1Upgrade to this build

Published Updated Sources: CVE.org, NVD

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Cleverbrush FrameworkAffected: 4.0Upgrade to: not statedAffected: 4.1Upgrade to: not statedAffected: 4.2Upgrade to: not statedAffected: 4.3Upgrade to: not statedFixed builds4.4.1 + 1 more branchStated by: CVE record
  • Cleverbrush DeepAffected: 4.0Upgrade to: not statedAffected: 4.1Upgrade to: not statedAffected: 4.2Upgrade to: not statedAffected: 4.3Upgrade to: not statedFixed builds4.4.1 + 1 more branchStated by: CVE record

Versions as the sources state them. Full version matrix after sign-in

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What it is

From the CVE record

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.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS53rd
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

0.7% chance of exploitation activity in the next 30 days, which ranks it in the 53rd percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

7 events over 34 days, from the signal feeds we watch.

  1. Record updated
  2. Record updated
  3. Publishedweakness classified, att&ck mapped, record updated, record updated

Affected products

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Scored 7.3 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required NoneNo authentication required — anyone can exploit this
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality LowSome restricted information is disclosed, but limited in scope
  • Integrity LowData modification is possible but limited in scope or consequence
  • Availability LowReduced performance or intermittent disruption of service

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

And 6 more references. See all after sign-in

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