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CVE-2026-106438VulnerabilityPublished Updated

Mongo c driver: An incorrect calculation

Affects mongo-c-driverSource GCVE Database

0
Authoritative record:CVE-2026-106438· Medium 5.1

Not known to be exploited · CVSS 5.1 Medium.

Data as of 28 Oct 2026, 22:31 UTC

CVSS 4.0 base score
5.1Medium
How severe the flaw is on the 0–10 CVSS scale.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10mongo-c-driverpkg:deb/ubuntu/mongo-c-driver?arch=source&distro=stonkingOther threatsAffected
  • 2.2.2-1 – 2.5.0-1
5 affected builds
Fixed in–
Ubuntu 26.04 LTSmongo-c-driverpkg:deb/ubuntu/mongo-c-driver?arch=source&distro=resoluteOther threatsAffected
  • 1.30.4-1ubuntu1 – 2.2.2-1
4 affected builds
Fixed in–
Ubuntu Pro 24.04 LTSmongo-c-driverpkg:deb/ubuntu/mongo-c-driver?arch=source&distro=esm-apps/nobleOther threatsAffected
  • 1.24.3-1 – 1.26.0-1.1ubuntu2+esm1
9 affected builds
Fixed in–
Ubuntu Pro 22.04 LTSmongo-c-driverpkg:deb/ubuntu/mongo-c-driver?arch=source&distro=esm-apps/jammyOther threatsAffected
  • 1.18.0-1 – 1.21.0-1ubuntu0.1~esm1
9 affected builds
Fixed in–
Ubuntu Pro 20.04 LTSmongo-c-driverpkg:deb/ubuntu/mongo-c-driver?arch=source&distro=esm-apps/focalOther threatsAffected
  • 1.15.0-1 – 1.16.1-1ubuntu0.1~esm1
8 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

An incorrect calculation in Decimal128 string parsing in the MongoDB C Driver can accept certain over-precision inputs containing leading zeros instead of rejecting them. This produces a value different from the supplied text. An actor who can provide a decimal string to an embedding application, including through Extended JSON parsing, can cause the application to store or use an incorrect numeric value.

References

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