VULNERABILITY INTELLIGENCE

CVE-2026-81529

CVSS score7.1 HIGH
EPSS probability0.29%
CISA KEVNot currently listed
Published2026-08-27
Last modified2026-09-29
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N

Description

Improper neutralization of delimiters in connection-URL construction allows connection-option injection in the MongoDB C# Driver. When an application passes untrusted text into the driver's connection-URL builder and round-trips the builder back into a client configuration, the untrusted text is serialized without neutralizing the URL/option delimiters and is then re-parsed as authoritative connection options. A low-privileged user of such an application can thereby introduce or suppress security-relevant connection settings.

Weakness classification

  • cna@mongodb.com: CWE-88

Primary references