CVE-2026-13077
High · 7.1CVSS
7.1
EPSS
0.4%
Published
Jul 22, 2026
CISA due date
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The record
A missing bounds check in the BSON CodeWScope element accessors allows an attacker to trigger an out-of-bounds heap read via a crafted aggregation pipeline. The vulnerability can be exploited by an authenticated user by generating a malformed BSONColumn data containing a CodeWScope element, bypassing wire-level BSON validation. When the forged element is decompressed, the unchecked size value is used in pointer arithmetic, causing either a server crash or disclosure of adjacent heap memory contents.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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