CVE-2026-81525CWE-943

CVE-2026-81525

High · published August 28, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
41.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
8.6 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00489 · 41.1th percentile
Weakness
CWE-943 · Improper Neutralization of Special Elements in Data Query Logic
Published
2026-08-28T00:18Z
Affected products (4)
ProductVersionsFixed in
mongodb/php_library≥ 2.0.0, < 2.4.12.4.1
mongodb/php_driver< 1.21.61.21.6
mongodb/php_driver≥ 2.0.0, < 2.4.12.4.1
mongodb/php_library< 1.21.41.21.4
References (5)
https://github.com/mongodb/mongo-php-driver/releases/tag/1.21.6 · [email protected]https://github.com/mongodb/mongo-php-driver/releases/tag/2.4.1 · [email protected]https://github.com/mongodb/mongo-php-library/releases/tag/1.21.4 · [email protected]https://github.com/mongodb/mongo-php-library/releases/tag/2.4.1 · [email protected]https://jira.mongodb.org/browse/PHPLIB-1927 · [email protected]
EPSS history
Timeline
  • 27 AUG 18:32Z
    Cross-tenant database retargeting via dot/NUL injection in namespace strings in the PHP Driver
    cvelistv5