dbcve.org
MariaDBDatabase / datastore

CVE-2021-46661

MEDIUM · 5.5 CVSS v3.1 Published 2022-02-01
Fix available
A fix is available. Upgrade to 10.2.43 / 10.3.34 or later.
See remediation →
57/100
Remediation priority · Elevated
Public exploit Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
MariaDB through 10.5.9 allows an application crash in find_field_in_tables and find_order_in_list via an unused common table expression (CTE).

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
MariaDBDatabase / datastore
Affected:>= 10.2.0, < 10.2.43>= 10.3.0, < 10.3.34>= 10.4.0, < 10.4.24>= 10.5.0, < 10.5.15>= 10.6.0, < 10.6.7>= 10.7.0, < 10.7.3
FedoraOperating system
Affected:= 34= 35= 36

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 10.2.43 / 10.3.34 / 10.4.24 or later
Fixed in 10.2.4310.3.3410.4.24
Vendor patch mariadb.com →
Recommended fix High confidence

Upgrade to MariaDB 10.2.43, 10.3.34, 10.4.24, or 10.5.15 (or later stable releases in each respective branch)

  1. 1. Identify the current MariaDB installation method (e.g., package manager, source compile, Docker container)
  2. 2. For package manager installations: Update the MariaDB repository configuration to point to the appropriate version
  3. 3. Stop the MariaDB service before upgrading: systemctl stop mariadb or service mysql stop
  4. 4. Upgrade MariaDB using the system package manager: yum update mariadb-server or dnf update mariadb-server (Fedora)
  5. 5. Alternatively for apt-based systems: apt-get update && apt-get install mariadb-server
  6. 6. Start the MariaDB service after upgrade: systemctl start mariadb or service mysql start
  7. 7. Run mysql_upgrade to ensure database compatibility: mysql_upgrade -u root -p
  8. 8. Verify the version after upgrade: SELECT VERSION();
Caveat Minor version upgrades typically have no breaking changes; always test in non-production environment before deploying to production

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,600. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-46661 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data