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Fencer Vulns
high 8.0

CVE-2026-107821 json

MariaDB: insufficient validation of binary frm data when opening a table

published 2026-09-07 2 mo ago modified 2026-10-16 23 d ago also BIT-mariadb-2026-107821 , BIT-mariadb-min-2026-107821 , BIT-mysql-client-2026-107821 , EUVD-2026-95921 , GHSA-c4gx-34mg-95q5

cvss
8.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits
0
none known

Summary

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, MariaDB insufficiently validated counts, offsets, lengths, and field boundaries in FRM metadata while opening binary FRM files. An attacker able to place a crafted FRM file in the data directory could trigger out-of-bounds reads or writes, crash the server, or potentially execute code. 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.

Patch / fix

  • bitnami mariadb 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, 13.0.2
  • bitnami mariadb-min 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, 13.0.2
  • bitnami mysql-client 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, 13.0.2
  • mariadb mariadb 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, 13.0.2
  • mariadb Debian 14 1:11.8.9+ds-1

debian advisories DEBIAN-CVE-2026-107821

  • mariadb11.8 hummingbird 1 11.8.9-0.1.hum1
  • mariadb11.8-pam hummingbird 1 11.8.9-0.1.hum1
  • mariadb11.8-test hummingbird 1 11.8.9-0.1.hum1
  • mariadb11.8-backup hummingbird 1 11.8.9-0.1.hum1
  • mariadb11.8-common hummingbird 1 11.8.9-0.1.hum1
  • mariadb11.8-errmsg hummingbird 1 11.8.9-0.1.hum1
  • mariadb11.8-server hummingbird 1 11.8.9-0.1.hum1
  • mariadb11.8-embedded hummingbird 1 11.8.9-0.1.hum1

red hat advisories RHSA-2026:84689RHSA-2026:83108

  • mariadb openSUSE Tumbleweed 12.3.2-3.1

opensuse advisories openSUSE-SU-2026:12245-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-107821 updated cvss 6.7

mariadb: mariadb: Arbitrary code execution via crafted FRM metadata

  • Red Hat Enterprise Linux 7 mariadb, mariadb-libs, mariadb-test, mariadb-bench, mariadb-server, mariadb-embedded Red Hat Enterprise Linux 8 Judy, galera, mariadb, mariadb-pam, mariadb-test, mariadb-backup, +8 more Red Hat Enterprise Linux 9 mariadb, mariadb-pam, mariadb-test, mariadb-backup, mariadb-common, mariadb-errmsg, +6 more Red Hat Enterprise Linux 10 mariadb11.8, mariadb10.11
    affected: workaround, no fix available “Upgrade to the fixed version of MariaDB Server”
  • Red Hat OpenStack Platform 13 (Queens) mariadb, mariadb-libs, mariadb-test, mariadb-common, mariadb-config, mariadb-errmsg, +3 more
    affected: workaround, no fix planned “Upgrade to the fixed version of MariaDB Server”
  • Red Hat Hardened Images mariadb11.8 11.8.9-0.1.hum1, mariadb10.11 10.11.18-4.1.hum1, mariadb11.8-pam 11.8.9-0.1.hum1, mariadb11.8-test 11.8.9-0.1.hum1, mariadb10.11-pam 10.11.18-4.1.hum1, mariadb11.8-backup 11.8.9-0.1.hum1, +31 more
    fixed: vendor fix “Upgrade to the fixed version of MariaDB Server” RHSA-2026:83108

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
30 d ago

Exploit prediction

1.20% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.0 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
OSV 3.1 8.0 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
bitnami mariadb
>=10.6.1, <10.6.28
>=10.11.1, <10.11.19
>=11.4.1, <11.4.13
>=11.8.1, <11.8.9
>=12.3.1, <12.3.3
>=13.0.1, <13.0.2
10.6.28
10.11.19
11.4.13
11.8.9
12.3.3
13.0.2
bitnami mariadb-min
>=10.6.1, <10.6.28
>=10.11.1, <10.11.19
>=11.4.1, <11.4.13
>=11.8.1, <11.8.9
>=12.3.1, <12.3.3
>=13.0.1, <13.0.2
10.6.28
10.11.19
11.4.13
11.8.9
12.3.3
13.0.2
bitnami mysql-client
>=10.6.1, <10.6.28
>=10.11.1, <10.11.19
>=11.4.1, <11.4.13
>=11.8.1, <11.8.9
>=12.3.1, <12.3.3
>=13.0.1, <13.0.2
10.6.28
10.11.19
11.4.13
11.8.9
12.3.3
13.0.2

Affected products

  • MariaDB server

Classification

Weakness
  • CWE-1285 Improper Validation of Specified Index, Position, or Offset in Input
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

The maintainers of MariaDB/server published their own advisory on GitHub. Reviewed sources take precedence over it.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.