CVE-2026-103286CWE-266

CVE-2026-103286

High · published October 1, 2026

CVSS v3.1
7.3
EPSS
0%
Percentile
7.6
In the wild
Unconfirmed
What it is

Ghost versions from 2.21.0 before 6.56.0 contain a privilege escalation vulnerability in the notifications system that allows low-privilege staff users to escalate to higher-privilege staff roles. Attackers with low-privilege staff access can exploit the notifications system to gain elevated privileges without proper authorization checks.

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
CVSS v4.0
8.5 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00185 · 7.6th percentile
Weakness
CWE-266 · Incorrect Privilege Assignment
Published
2026-10-01T15:17Z
References (2)
https://github.com/TryGhost/Ghost/security/advisories/GHSA-pv24-pfvg-vr83 · [email protected]https://www.vulncheck.com/advisories/ghost-2.21.0-before-6.56.0-privilege-escalation-via-notifications · [email protected]
EPSS history
Timeline
  • 03 OCT 03:41Z
    EPSS moved — → 0%
    epss
  • 01 OCT 10:42Z
    Ghost 2.21.0 before 6.56.0 Privilege Escalation via Notifications
    cvelistv5