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Kodbox CVE-2026-5618

| EUVDEUVD-2026-19164 LOW
Server-Side Request Forgery (SSRF) (CWE-918)
2026-04-06 VulDB
2.9
CVSS 4.0 · Vendor: VulDB
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V4 - API and Web Service URL allowlisting, SSRF prevention
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Credential Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

The CVSS score of 5.6 (Medium) with vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R reflects several competing signals. Network-accessible attack vector (AV:N) and no privilege requirement (PR:N) indicate broad reachability, but high attack complexity (AC:H) and difficult exploitability (E:P) suggest technical barriers to successful exploitation. The presence of publicly available exploit code (POC/Exploit: Publicly available) combined with lack of vendor response (RL:X) elevates practical risk despite the moderate CVSS score. The vulnerability impacts confidentiality, integrity, and availability equally (C:L/I:L/A:L), typical of SSRF allowing reconnaissance, data exfiltration, and potential service disruption. From an SSVC perspective, this represents a credible but non-trivial threat: exploitation is possible (not probabilistic), automatable once the attack pattern is known, and can enable lateral movement or information gathering. Organizations running Kodbox 1.64 or earlier should prioritize assessment and remediation, though the high attack complexity means casual exploitation is unlikely without specialized knowledge. Real-world risk depends heavily on network architecture and what resources the Kodbox server can reach from its network position.

Exploit ScenarioDerived

An attacker discovers a Kodbox instance running version 1.64 or earlier and crafts a malicious request to the shareMake or shareCheck endpoint, manipulating the siteFrom parameter to point to an internal service such as a metadata endpoint (http://169.254.169.254) or internal application server. The server, lacking proper input validation, makes the request on behalf of the attacker and returns the response, allowing the attacker to enumerate internal services, extract credentials from metadata services, or probe internal network topology. With publicly available exploit code, an attacker with moderate technical skill can execute this attack remotely without authentication or user interaction, though the high attack complexity requirement (AC:H) means the attack may require specific environmental knowledge or multiple request iterations to succeed.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Apr 06, 2026

Server-side request forgery (SSRF) in Kalcaddle Kodbox up to version 1.64 allows unauthenticated remote attackers to perform arbitrary network requests via manipulation of the siteFrom/siteTo parameters in the shareMake/shareCheck component, with publicly available exploit code and high attack complexity. The vendor has not responded to disclosure efforts, leaving affected installations vulnerable to information disclosure and potential lateral network attacks.

RemediationAI

Upgrade Kalcaddle Kodbox to a version greater than 1.64 immediately; however, no specific patched version number has been independently confirmed from vendor advisory at time of analysis. Since the vendor (Kalcaddle) has not responded to disclosure efforts and no official patch acknowledgment is documented, users should verify the latest available release from the official Kalcaddle Kodbox repository and test compatibility before deployment. As a temporary mitigation, restrict network access to the shareMake and shareCheck endpoints via web application firewall or reverse proxy rules, and implement strict input validation/filtering on siteFrom and siteTo parameters to block requests to private IP ranges (127.0.0.1, 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) and local metadata services. Monitor outbound connections from Kodbox instances for anomalous SSRF activity. Additional vulnerability details and any community-provided patches may be available at https://vuldb.com/vuln/355408/cti.

Affected VersionsENISA

kodbox 1.8
kodbox 1.60
kodbox 1.4
kodbox 1.57
kodbox 1.47
kodbox 1.23
kodbox 1.45
kodbox 1.11
kodbox 1.17
kodbox 1.10
kodbox 1.28
kodbox 1.52
kodbox 1.32
kodbox 1.59
kodbox 1.63
kodbox 1.48
kodbox 1.18
kodbox 1.19
kodbox 1.22
kodbox 1.14
kodbox 1.12
kodbox 1.44
kodbox 1.38
kodbox 1.36
kodbox 1.61
kodbox 1.21
kodbox 1.34
kodbox 1.6
kodbox 1.26
kodbox 1.53
kodbox 1.30
kodbox 1.24
kodbox 1.64
kodbox 1.3
kodbox 1.49
kodbox 1.33
kodbox 1.5
kodbox 1.15
kodbox 1.0
kodbox 1.46
kodbox 1.35
kodbox 1.2
kodbox 1.40
kodbox 1.50
kodbox 1.39
kodbox 1.41
kodbox 1.20
kodbox 1.62
kodbox 1.7
kodbox 1.54
kodbox 1.29
kodbox 1.42
kodbox 1.43
kodbox 1.31
kodbox 1.58
kodbox 1.13
kodbox 1.25
kodbox 1.1
kodbox 1.55
kodbox 1.56
kodbox 1.27
kodbox 1.51
kodbox 1.16
kodbox 1.37
kodbox 1.9

Affected Packages

euvd kodbox no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability exploits improper input validation in Kodbox's file sharing functionality, specifically the shareMake and shareCheck components. The root cause is classified as CWE-918 (Server-Side Request Forgery), indicating that user-supplied siteFrom and siteTo parameters are not adequately sanitized before being used in server-side HTTP requests. An attacker can manipulate these parameters to redirect the server into making requests to unintended internal or external targets, bypassing normal network segmentation and access controls. Kodbox is a cloud storage and file management system, and the vulnerable endpoint is part of its sharing mechanism. The CPE designation cpe:2.3:a:kalcaddle:kodbox:*:*:*:*:*:*:*:* indicates all versions up to and including 1.64 are affected.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (VulDB) PRIMARY 2.9 LOW
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Primary rating from Vendor (VulDB) · only source for this CVE.

CVSS VectorVendor: VulDB

Attack Vector
Network
Attack Complexity
High
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vulnerable system: Confidentiality
Low
Vulnerable system: Integrity
Low
Vulnerable system: Availability
Low
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

4
Severity Changed
Apr 29, 2026 - 01:11 NVD
MEDIUM LOW
CVSS changed
Apr 29, 2026 - 01:11 NVD
6.3 (MEDIUM) 2.9 (LOW)
PoC Detected
Apr 07, 2026 - 13:20 vuln.today
Public exploit code
CVE Published
Apr 06, 2026 - 03:30 nvd
MEDIUM 6.3

DescriptionCVE.org

A vulnerability was detected in kalcaddle kodbox up to 1.64. This affects an unknown function of the component shareMake/shareCheck. Performing a manipulation of the argument siteFrom/siteTo results in server-side request forgery. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitability is reported as difficult. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Threat Intelligence Overview

EPSS Score
0.0%
Top 89% exploitable
Exploit
POC
Public exploit code exists
Social Media
1
Sightings
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity LOW
CISA KEV No
Public POC Yes
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
LOW severity (CVSS 0.1-3.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
Poc
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Low
Technical Impact
Partial

Priority Score

34
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +14
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Server-Side Request Forgery exploits applications that fetch remote resources based on user-supplied URLs.

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