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CVE-2026-107383

HIGH 7.5

Published 2026-10-08 · Last modified 2026-10-14

MariaDB Connector/Node.js is used to connect applications developed on Node.js to MariaDB and MySQL databases. Prior to 3.2.5, 3.3.4, 3.4.7, and 3.5.4, the GeoJSON Polygon and MultiPolygon binary encoders size a Buffer.allocUnsafe() allocation from each ring's numeric length before confirming that the ring is an array. A malformed non-array ring can therefore reserve bytes that the writing loop skips, and the connector sends the full buffer through execute() or batch(), disclosing uninitialized Node.js heap data into a database value. The persisted data can include other users' content, session material, database credentials, or TLS key material and may propagate to backups and replicas. The text-protocol query() path is not affected. This issue is fixed in versions 3.2.5, 3.3.4, 3.4.7, and 3.5.4.

ELEVATED IMPACT

Severe if exploited (CVSS 7.5), but no known exploitation and low modeled probability. Patch on a normal cadence.

Exploitation likelihood

0.4%chance of exploitation in 30 days · 33rd percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

7.5CVSS 3.1 · HIGH

  • ConfidentialityHigh
  • IntegrityNone
  • AvailabilityNone

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ✓Privileges: No account or privileges required
  • ✓User interaction: No user interaction needed
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Mariadb Corporation

Products Mariadb Connector Nodejs

Weakness (CWE)

  • CWE-200: : Exposure of Sensitive Information to an Unauthorized Actor

CVSS vector

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

References and research data (JSON)

Packages and version ranges

Each advisory describes its own package and affected ranges. A boundary applies to that range; it is not a universal upgrade recommendation.

  • mariadb npm

    pkg:npm/mariadb

    SEMVER range
    • All earlier versions (introduced 0)
    • Fixed boundary (excluded): 3.2.5
    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-48qf-xh34-q73r/GHSA-48qf-xh34-q73r.json"
  }
}
    GitHub Advisory Database · GHSA-48qf-xh34-q73r · Updated 2026-10-16T09:55:42.823324858Z
  • mariadb npm

    pkg:npm/mariadb

    SEMVER range
    • Introduced version (included): 3.3.0
    • Fixed boundary (excluded): 3.3.4
    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-48qf-xh34-q73r/GHSA-48qf-xh34-q73r.json"
  }
}
    GitHub Advisory Database · GHSA-48qf-xh34-q73r · Updated 2026-10-16T09:55:42.823324858Z
  • mariadb npm

    pkg:npm/mariadb

    SEMVER range
    • Introduced version (included): 3.4.0
    • Fixed boundary (excluded): 3.4.7
    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-48qf-xh34-q73r/GHSA-48qf-xh34-q73r.json"
  }
}
    GitHub Advisory Database · GHSA-48qf-xh34-q73r · Updated 2026-10-16T09:55:42.823324858Z
  • mariadb npm

    pkg:npm/mariadb

    SEMVER range
    • Introduced version (included): 3.5.0-rc.0
    • Fixed boundary (excluded): 3.5.4
    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-48qf-xh34-q73r/GHSA-48qf-xh34-q73r.json"
  }
}
    GitHub Advisory Database · GHSA-48qf-xh34-q73r · Updated 2026-10-16T09:55:42.823324858Z

All CVSS metrics

  • HIGH 7.5 v3.1 · CNA Primary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  • HIGH 7.5 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS