CVE-2026-55215
What it is
MariaDB Connector/Node.js is used to connect applications developed on Node.js to MariaDB and MySQL databases. Prior to versions 3.3.3, 3.4.6, and 3.5.3, when ssl is enabled without a pinned CA or server certificate, MariaDB Connector/Node.js sends credentials before completing certificate fingerprint validation. In lib/cmd/handshake/auth/handshake.js, a server that selects mysql_clear_password as the initial authentication plugin can receive the password before the post-TLS identity check. In lib/cmd/handshake/authentication.js, an authentication switch can evaluate the previous plugin instead of the requested target plugin, allowing mysql_clear_password to send the credential first. An active man-in-the-middle can present a self-signed certificate, capture the database password, and use it to authenticate directly even though the connector later rejects the server and closes the connection. This issue is fixed in versions 3.3.3, 3.4.6, and 3.5.3.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure.
- Exploit odds
- 0.6% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.6% in the next 30 days (EPSS).
- Severity: 7.5 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.6% · EPSS, next 30 days
- Weakness
- CWE-295 · Improper certificate validation
- Record status
- Awaiting Analysis
Attack profile CVSS 3.1 · 7.5
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-55215.md and follow it. Check whether this project is affected by CVE-2026-55215. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/514576a5a1fab3ea8498613e259a0b7a764e7302
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/c47d7275835c78c7eb8186cd23e9d57c045c128b
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/ecd36958e6e3bf0e0fa8389546f50c0ed6dbb2ac
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.3.3
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.4.6
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.5.3
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/security/advisories/GHSA-cqhc-2h57-wpxf
References
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/514576a5a1fab3ea8498613e259a0b7a764e7302
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/c47d7275835c78c7eb8186cd23e9d57c045c128b
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/commit/ecd36958e6e3bf0e0fa8389546f50c0ed6dbb2ac
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.3.3
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.4.6
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/releases/tag/3.5.3
- https://github.com/mariadb-corporation/mariadb-connector-nodejs/security/advisories/GHSA-cqhc-2h57-wpxf
- https://hackerone.com/reports/3777370
- https://jira.mariadb.org/browse/CONJS-349