What is CVE-2026-13062?

CVE-2026-13062 is a medium-severity vulnerability in MongoDB, classified under Unintended Proxy or Intermediary (Confused Deputy). CVSS score: 6.5/10. Published 2026-07-22.

How severe is CVE-2026-13062?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in MongoDB

CVE-2026-13062

An authenticated user with write privileges on a Queryable Encryption-enabled collection may be able to modify internal encryption metadata fields that are intended to be server-controlled, by sending crafted write commands through the mongos router on a sharded cluster. This can result in corruption of encrypted query correctness.

Published 2026-07-22 · last modified 2026-08-05.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.002 (7.9th percentile), scored 2026-10-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

MongoDB
MongoDB Server — versions 7.0, 8.0, 8.2.0

Weakness classification (CWE)

CWE-441 — Unintended Proxy or Intermediary (Confused Deputy)

References

jira.mongodb.org/browse/SERVER-127831 (Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2026-13062?: CVE-2026-13062 is a medium-severity vulnerability in MongoDB, classified under Unintended Proxy or Intermediary (Confused Deputy). CVSS score: 6.5/10. Published 2026-07-22.
How severe is CVE-2026-13062?: Medium severity. CVSS v3 base score is 6.5 out of 10.