Is CVE-2026-4588 in the CISA KEV catalog?

No. CVE-2026-4588 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-4588?

CVE-2026-4588 has a CVSS v3 base score of 3.7 (LOW).

What is the EPSS score for CVE-2026-4588?

CVE-2026-4588 has an EPSS score of 0.27% (18th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2026-4588?

No published fix for CVE-2026-4588 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2026-4588

LOW

3.7

CVSS v3

NVD

Description

A vulnerability was determined in kalcaddle kodbox 1.64. Impacted is the function shareSafeGroup of the file /workspace/source-code/app/controller/explorer/shareOut.class.php of the component Site-level API key Handler. This manipulation of the argument sk causes use of hard-coded cryptographic key . The attack may be initiated remotely. The complexity of an attack is rather high. The exploitability is considered difficult. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

CWE-320 CWE-321

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.27%probability of exploitation in 30 days

18thpercentile

Low risk: more likely to be exploited than 18% of all known CVEs.

References

Other references4

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.