CVE-2026-81525 (GCVE-0-2026-81525)

Vulnerability from cvelistv5 – Published: 2026-08-27 18:32 – Updated: 2026-08-28 15:49
VLAI
Title
Cross-tenant database retargeting via dot/NUL injection in namespace strings in the PHP Driver
Summary
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.
Severity
8.6 (High)
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
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 15:48 UTC
CWE
  • CWE-943 - Improper Neutralization of Special Elements in Data Query Logic
Assigner
References
Impacted products
Vendor Product Version CPE status
MongoDB PHP Library Affected: 0 , < 1.21.4 (semver)
Affected: 2.0.0 , < 2.4.1 (semver)
guessed Create a notification for this product.
MongoDB PHP Extension Affected: 0 , < 1.21.6 (semver)
Affected: 2.0.0 , < 2.4.1 (semver)
guessed Create a notification for this product.
Show details on NVD website
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.