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Vulnerability record · CVE-2026-66723 · published 29 July 2026

CVE-2026-66723: Missing authorization vulnerability

MWDB Core versions >=2.2.0 and <2.19.0 contain a missing authorization vulnerability in the Remote Instances proxy API. The proxy API does not verify authentication for incoming requests, allowing an unauthenticated remote attacker to send arbitrary requests to a remote MWDB instance using the identity and permissions associated with the configured API key. This can result in unauthorized actions being performed on the remote instance as if executed by the user whose API key was used to set up the remote instance. The vulnerability is limited to deployments where Remote Instances have been configured.This issue has been fixed in version 2.19.0

7.0 CVSS 4.0 High EPSS 0.84% · top 44.0% CWE-862 · Missing authorization Deferred
7.0CVSS 4.0 base score
0.84%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
30 Jul 2026Last modified by NVD

Description

MWDB Core versions >=2.2.0 and <2.19.0 contain a missing authorization vulnerability in the Remote Instances proxy API. The proxy API does not verify authentication for incoming requests, allowing an unauthenticated remote attacker to send arbitrary requests to a remote MWDB instance using the identity and permissions associated with the configured API key. This can result in unauthorized actions being performed on the remote instance as if executed by the user whose API key was used to set up the remote instance. The vulnerability is limited to deployments where Remote Instances have been configured.This issue has been fixed in version 2.19.0

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://cert.pl/en/posts/2026/07/CVE-2026-66723
https://github.com/CERT-Polska/mwdb-core/releases/tag/v2.19.0
https://github.com/CERT-Polska/mwdb-core/security/advisories/GHSA-942c-r7qj-w895

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Source: NIST National Vulnerability Database (record CVE-2026-66723), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.