Vulnerability · Published Mar 23, 2026 · Assigned by VulDB

CVE-2026-4591kalcaddle kodbox fileThumb Endpoint app.php checkBin os command injection

Medium 4.7

In plain English

A medium-severity OS command injection in kodbox from kalcaddle. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.5% (higher than 89% of all known vulnerabilities).

Severity (CVSS 3.1)4.7Medium

Exploit odds (30 days)3.5%top 10.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A weakness has been identified in kalcaddle kodbox 1.64. This affects the function checkBin of the file /workspace/source-code/plugins/fileThumb/app.php of the component fileThumb Endpoint. Executing a manipulation can lead to os command injection. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
kalcaddle	kodbox	1.64

Weakness: CWE-78, CWE-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-352427 | kalcaddle kodbox fileThumb Endpoint app.php checkBin os command injection vdb-entry, technical-description
VDB-352427 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #775470 | Kodbox 1.64 Command Injection third-party-advisory
https://vulnplus-note.wetolink.com/share/3ml5XA0firIa broken-link, exploit