CVE-2026-103267CWE-807

CVE-2026-103267

Medium · published October 1, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
17.2
In the wild
Unconfirmed
What it is

Ghost versions before 6.62.0 contain an authentication bypass vulnerability in staff invite acceptance that allows users to specify any email address when creating their account. Attackers can accept leaked invite tokens with attacker-controlled email addresses, or legitimate recipients can register with unintended email providers.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS
0.00263 · 17.2th percentile
Weakness
CWE-807 · Reliance on Untrusted Inputs in a Security Decision
Published
2026-10-01T15:17Z
References (2)
https://github.com/TryGhost/Ghost/security/advisories/GHSA-xcgh-2828-cvmx · [email protected]https://www.vulncheck.com/advisories/ghost-0.5.0-before-6.62.0-arbitrary-email-registration-via-staff-invite · [email protected]
EPSS history
Timeline
  • 03 OCT 03:41Z
    EPSS moved — → 0%
    epss
  • 01 OCT 10:42Z
    Ghost 0.5.0 before 6.62.0 Arbitrary Email Registration via Staff Invite
    cvelistv5