CVE-2026-88026CWE-943

CVE-2026-88026

Medium · published September 10, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
30.7
In the wild
Unconfirmed
What it is

Improper neutralization of regular-expression metacharacters in the LINQ query translation component of the MongoDB C# Driver can cause a caller-supplied character sequence to alter a regular-expression predicate generated by an affected application. An authenticated user who can influence such a value may cause the application to return records beyond those intended by the original filter.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00379 · 30.7th percentile
Weakness
CWE-943 · Improper Neutralization of Special Elements in Data Query Logic
Published
2026-09-10T22:18Z
Affected products (1)
ProductVersionsFixed in
mongodb/c\#_driver≥ 2.14.0, < 3.11.23.11.2
References (1)
https://jira.mongodb.org/browse/CSHARP-6177 · [email protected]
EPSS history
Timeline
  • 12 SEP 03:22Z
    EPSS moved — → 0%
    epss
  • 10 SEP 17:48Z
    Regular expression injection via unescaped characters in LINQ query translation in MongoDB C# Driver
    cvelistv5