What is CVE-2026-81525?

CVE-2026-81525 is a high-severity vulnerability in MongoDB PHP Driver, classified under Improper Neutralization of Special Elements in Data Query Logic. CVSS score: 8.1/10. Published 2026-08-27.

How severe is CVE-2026-81525?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in MongoDB PHP Driver

CVE-2026-81525

The MongoDB client library for PHP does not sufficiently sanitize special elements in application-supplied namespace identifiers before using them to construct the target namespace for database operations. An application that incorporates untrusted text into these identifiers may have operations silently directed at a different storage location than the one the application intended.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

CWE-943 — Improper Neutralization of Special Elements in Data Query Logic

References

Frequently asked questions

What is CVE-2026-81525?: CVE-2026-81525 is a high-severity vulnerability in MongoDB PHP Driver, classified under Improper Neutralization of Special Elements in Data Query Logic. CVSS score: 8.1/10. Published 2026-08-27.
How severe is CVE-2026-81525?: High severity. CVSS v3 base score is 8.1 out of 10.