MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, the CONNECT engine's DOS table type used an incorrect boundary check that permitted a one-byte null write beyond a stack buffer at an attacker-controlled offset. An authenticated user able to use the CONNECT engine could cause a crash and potentially remote code execution. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.
CVE-2026-107815
HIGHPre-NVD 8.58.5—Trending — 3 sources updated this week
EchelonGraph scoreMEDIUM confidence
This high-severity CVE scores 8.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (45th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.5Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 8.5
- EG Score
- 8.5HIGHmedium confidence
- EG Risk
- 43EG Risk 43/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity85% × 45%Exploitation1% × 40%Automatability30% × 15%CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 0.6%
- EPSS %ILE
- 45th
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
October 9, 2026
Last Modified
October 9, 2026
Advisory Details (9)
Auto-updated Oct 9, 2026Patch available. Sources: github, github_commit, github_release.
generic
[MDEV-40637] CONNECT crashes on double(255,50) in DOS table - Jira
https://jira.mariadb.org/browse/MDEV-40637github_release Patch Available
MariaDB Community Server 13.0.2
Patch available: MariaDB/server mariadb-13.0.2
https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2github_release Patch Available
MariaDB Community Server 12.3.3
Patch available: MariaDB/server mariadb-12.3.3
https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3github_release Patch Available
MariaDB Community Server 11.8.9
Patch available: MariaDB/server mariadb-11.8.9
https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9github_release Patch Available
MariaDB Community Server 11.4.13
Patch available: MariaDB/server mariadb-11.4.13
https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13github_release Patch Available
MariaDB Community Server 10.6.28
Patch available: MariaDB/server mariadb-10.6.28
https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28github_release Patch Available
MariaDB Community Server 10.11.19
Patch available: MariaDB/server mariadb-10.11.19
https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19github_commit Patch Available
commit b369925f6855 (MariaDB/server)
Patch available: MariaDB/server mariadb-10.6.28 (contains commit b369925f6855)
https://github.com/MariaDB/server/commit/b369925f6855d3e1f0ebcf453492724b99fda6f8githubMentions a patch (unverified)
One byte out-of-bound buffer write in DOS tables of the CONNECT engine · Advisory · MariaDB/server · GitHub
Affected: 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, 13.0.2.
https://github.com/MariaDB/server/security/advisories/GHSA-4wgx-ffg9-jrwqWeakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 5× in last 7d / 5× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
- 2026-10-11 04:52 UTCEG score recompute
- 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.6% · 45th percentile
- 2026-10-09 17:34 UTCEG score recompute
- 2026-10-09 16:28 UTCEG score recompute
- 2026-10-09 16:28 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-107815?
CVE-2026-107815 is a high vulnerability published on October 9, 2026. MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, the CONNECT engine's DOS table type used an incorrect boundary check that permitted a one-byte null write beyond a stack buffer at an attacker-controlled offset.…
When was the CVE record for CVE-2026-107815 published?
The CVE record for CVE-2026-107815 was published on October 9, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 9, 2026; the record at its source may have been updated since.
Is CVE-2026-107815 actively exploited?
CVE-2026-107815 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (45th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-107815?
CVE-2026-107815 has a CVSS base score of 8.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-107815?
A fix for CVE-2026-107815 is available: update to the fixed version the vendor names in its advisory.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-107815
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