What is CVE-2026-113666?

CVE-2026-113666 is a high-severity vulnerability in @Apostrophecms Db-Connect, classified under Uncontrolled Resource Consumption. CVSS score: 7.1/10. Published 2026-10-20.

How severe is CVE-2026-113666?

High severity. CVSS v3 base score is 7.1 out of 10.

Prototype Pollution in @Apostrophecms Db-Connect

CVE-2026-113666

ApostropheCMS is an open-source Node.js content management system. Prior to 1.1.0 of db-connect and 4.33.0 of ApostropheCMS, an account with view-draft access can submit a projection exclusion path that traverses through a constructor prototype chain to a shared prototype member when a consumer uses a SQLite, PostgreSQL, or multipostgres adapter and has a matching document. Every editing role has view-draft access, while guestApiAccess broadens this prerequisite to any logged-in account. The unsetNestedField helper then deletes the shared runtime member, causing persistent process-wide integrity and availability effects; the default MongoDB adapter is not affected. This issue is fixed in db-connect 1.1.0 and ApostropheCMS 4.33.0.

Vulnerability class: DoS (Denial of Service)

Published 2026-10-20 · last modified 2026-10-20.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

@Apostrophecms Db-Connect — versions < 1.1.0
Apostrophecms Apostrophe — versions < 4.33.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-113666?: CVE-2026-113666 is a high-severity vulnerability in @Apostrophecms Db-Connect, classified under Uncontrolled Resource Consumption. CVSS score: 7.1/10. Published 2026-10-20.
How severe is CVE-2026-113666?: High severity. CVSS v3 base score is 7.1 out of 10.