CVE-2026-81525Cross-tenant database retargeting via dot/NUL injection in namespace strings in the PHP Driver
Updated under an hour ago ()
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It affects MongoDB PHP Library and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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
- 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-943
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mongodb
- NVD analysis
- Analyzed
- Record last updated
- Aug 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
MongoDB PHP Library mongodb:php_library (from the name) | before 1.21.4; from 2.0.0 before 2.4.1 | CNA record |
MongoDB PHP Extension mongodb:php_extension (from the name) | before 1.21.6; from 2.0.0 before 2.4.1 | CNA record |
mongodb php_driver mongodb:php_driver | before 1.21.6; from 2.0.0 before 2.4.1 | NVD |
mongodb php_library mongodb:php_library | before 1.21.4; from 2.0.0 before 2.4.1 | NVD |
References
- https://jira.mongodb.org/browse/PHPLIB-1927vendor-advisory
- https://github.com/mongodb/mongo-php-library/releases/tag/1.21.4product, release-notes
- https://github.com/mongodb/mongo-php-library/releases/tag/2.4.1product, release-notes
- https://github.com/mongodb/mongo-php-driver/releases/tag/1.21.6product, release-notes
- https://github.com/mongodb/mongo-php-driver/releases/tag/2.4.1product, release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.