Insufficiently Protected Credentials Affecting mariadb package, versions <3.5.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-MARIADB-19432140
- published30 Aug 2026
- disclosed28 Aug 2026
- creditfg0x0
Introduced: 28 Aug 2026
NewCVE-2026-55854 (opens in a new tab)How to fix?
Upgrade mariadb to version 3.5.3 or higher.
Overview
Affected versions of this package are vulnerable to Insufficiently Protected Credentials via the SendPamAuthPacketFactory function. An attacker can intercept sensitive credentials by performing a man-in-the-middle attack or controlling a malicious server that issues an Authentication Switch Request for the dialog plugin over an insecure connection.
Note: This is only exploitable if connections occur over plain TCP (`sslMode'='DISABLE') or a TLS mode that only verifies server identity via self-signed-certificate fingerprint validation, and the attacker can occupy an on-path position or control the server.
Workaround
This vulnerability can be mitigated by restricting the permitted authentication plugins via restrictedAuth so dialog cannot be negotiated over an insecure transport, and by avoiding PAM (dialog) authentication over plain TCP.