What is CVE-2026-13063?

CVE-2026-13063 is a medium-severity vulnerability in Mongodb Server, classified under Integer Overflow or Wraparound. CVSS score: 4.3/10. Published 2026-07-22.

How severe is CVE-2026-13063?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Integer overflow in Mongodb Server

CVE-2026-13063

An authenticated user with standard read/write privileges can cause the mongod process to terminate due to an out-of-memory condition by sending a crafted aggregation command. MongoDB's libmongocrypt library insufficiently validates payloa…

Vulnerability class: Integer Overflow

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

Affected products

Mongodb Server — versions 8.2.0, 8.3.0

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

cna@mongodb.com

Frequently asked questions

What is CVE-2026-13063?: CVE-2026-13063 is a medium-severity vulnerability in Mongodb Server, classified under Integer Overflow or Wraparound. CVSS score: 4.3/10. Published 2026-07-22.
How severe is CVE-2026-13063?: Medium severity. CVSS v3 base score is 4.3 out of 10.