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CVE-2026-13077

HIGH
7.1
CVSS 3.1
Description
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.

Metadata

CVE ID
CVE-2026-13077
State
PUBLISHED
Assigner
mongodb
Reserved
2026-06-23 18:00 UTC
Published
2026-07-22 19:12 UTC
Last updated
2026-07-22 19:12 UTC
Primary CWE
CWE-125
CWE-125: Out-of-bounds Read
Vendor / Product
MongoDB / MongoDB Server
Sources
cve.org  ·  NVD

Severity & Metrics

7.1 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
Affected products (1)
VendorProductPlatformVersions
MongoDB MongoDB Server — 7.0 < 7.0.39, 8.0 < 8.0.28, 8.2.0 < 8.2.12, 8.3.0 < 8.3.7
Weakness (CWE)
CWESourceDescription
CWE-125 cna CWE-125: Out-of-bounds Read
CVSS scores (2)
ScoreSeverityVersionSourceVector
7.1 HIGH 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
7.1 HIGH 3.1 cna CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
References (1)
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