CVE-2026-106438
published 2026-10-08CVE-2026-106438: An incorrect calculation in Decimal128 string parsing in the MongoDB C Driver can accept certain over-precision inputs containing leading zeros instead of…
PriorityP416medium4CVSS 3.1
AVLACLPRNUINSUCNILAN
EPSS
0.11%
1.1th percentile
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.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mongodb | c_driver | >= 1.4.0 < 1.30.13 | 1.30.13 |
| mongodb | c_driver | >= 2.0.0 < 2.5.6 | 2.5.6 |
CVSS provenance
nvdv3.14.0MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
nvdv4.05.1MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
No advisories linked to this vulnerability.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-106438 mongo-c-driver: mongo-c-driver: Incorrect numeric calculation via over-precision Decimal128 string parsing [fedora-all]
bugzilla·2026-10-09·CVSS 4.0
CVE-2026-106438 [MEDIUM] CVE-2026-106438 mongo-c-driver: mongo-c-driver: Incorrect numeric calculation via over-precision Decimal128 string parsing [fedora-all]
CVE-2026-106438 mongo-c-driver: mongo-c-driver: Incorrect numeric calculation via over-precision Decimal128 string parsing [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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.
Bugzilla
CVE-2026-106438 mongo-c-driver: mongo-c-driver: Incorrect numeric calculation via over-precision Decimal128 string parsing [epel-all]
bugzilla·2026-10-09·CVSS 4.0
CVE-2026-106438 [MEDIUM] CVE-2026-106438 mongo-c-driver: mongo-c-driver: Incorrect numeric calculation via over-precision Decimal128 string parsing [epel-all]
CVE-2026-106438 mongo-c-driver: mongo-c-driver: Incorrect numeric calculation via over-precision Decimal128 string parsing [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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.
Bugzilla
CVE-2026-106438 mongo-c-driver: mongo-c-driver: Incorrect numeric calculation via over-precision Decimal128 string parsing
bugzilla·2026-10-08·CVSS 4.0
CVE-2026-106438 [MEDIUM] CVE-2026-106438 mongo-c-driver: mongo-c-driver: Incorrect numeric calculation via over-precision Decimal128 string parsing
CVE-2026-106438 mongo-c-driver: mongo-c-driver: Incorrect numeric calculation via over-precision Decimal128 string parsing
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.
2026-10-08
Published