What is CVE-2026-56780?

CVE-2026-56780 is a high-severity vulnerability in Modoboa, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2026-06-29.

How severe is CVE-2026-56780?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Modoboa

CVE-2026-56780

Modoboa before 2.9.0 contains an insecure direct object reference vulnerability in the PUT /api/v1/accounts/{pk}/password/ endpoint that allows domain administrators to change any user's password. Attackers with domain admin privileges can bypass object-level access controls to reset superadmin passwords and achieve full account takeover.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2026-06-29 · last modified 2026-07-01.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (37.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Modoboa — versions 0, 2.9.0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

github.com/modoboa/modoboa/commit/a1878c4920a6e47c3217c6ff1ed4a8753c202661 (patch)
github.com/modoboa/modoboa/pull/4038 (issue-tracking)
www.vulncheck.com/advisories/modoboa-insecure-direct-object-reference-in-accoun… (third-party-advisory)

Frequently asked questions

What is CVE-2026-56780?: CVE-2026-56780 is a high-severity vulnerability in Modoboa, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.5/10. Published 2026-06-29.
How severe is CVE-2026-56780?: High severity. CVSS v3 base score is 7.5 out of 10.