CVE-2026-103273

Medium

Description

Ghost versions 4.3.0 before 6.58.0 contain an authentication bypass vulnerability where lower-privilege staff users can use staff tokens to bypass post editing restrictions. Attackers with staff credentials can leverage tokens to edit posts beyond their assigned privilege level.

SeverityMedium

CVSS4.3

Exploit probability—

Product

Ghost

PublishedOct 1, 2026

First seenOct 1, 2026

Weakness typeCWE-863Incorrect authorization

How to fix

Update

TryGhost Ghost6.58.0 or later

Vendor advisories

github.com/TryGhost/Ghost/security/advisories/GHSA-jj85-wvj2-r86m

Affected products

Product	Affected versions	Fixed in
TryGhost Ghost	4.3.0 ≤ v < 6.58.0	6.58.0

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