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CVE-2026-81525 is an improper neutralization vulnerability in the MongoDB client library for PHP. The library insufficiently sanitizes special elements, including dot and NUL-byte characters, in application-supplied namespace identifiers before constructing the namespace used for database operations. Applications that incorporate untrusted input into database or collection namespace components can cause operations to be silently retargeted to an unintended database or collection, including another tenant's storage location.
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No public exploit code observed for this vulnerability.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity MongoDB PHP Driver namespace-injection flaw that can redirect database operations across tenant or logical database boundaries.
A network-accessible, low-complexity vulnerability requiring low privileges that can compromise confidentiality and integrity, with no availability impact indicated. The referenced affected package is php-mongodb on Debian Linux 11.0 through 14.0.
A namespace-identifier sanitization flaw in the MongoDB client library for PHP that can redirect application database operations to an unintended storage location. The reported CVSS v3.1 vector is AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N, and the weakness is classified as CWE-943.
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Every observed campaign linking this CVE to a named adversary.
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YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.