Is CVE-2026-103275 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-103275 being exploited in the wild.

How severe is CVE-2026-103275?

Medium severity, with a CVSS score of 4.3, published 1 October 2026.

Which products and versions are affected?

TryGhost Ghost 5.42.2 to before 6.58.0.

Is there a fix for CVE-2026-103275?

Yes: fixed in Ghost 6.58.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-103275 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-103275?

Check whether you run TryGhost Ghost at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-103275: Ghost information disclosure in Admin API bulk endpoints

CVE-2026-103275 · Severity: medium · CVSS 4.3 · Published 2026-10-01

Ghost, a popular open-source content management platform, contains a flaw in its Admin API that allows staff-level users to disclose the password hashes of other staff members. An attacker with staff credentials could leak password hashes through the bulk post and page edit endpoints, then attempt offline password-guessing attacks to compromise other staff accounts.

Technologies: TryGhost Ghost. Vendors: TryGhost.

Quick answers

Is CVE-2026-103275 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-103275 being exploited in the wild.
How severe is CVE-2026-103275?: Medium severity, with a CVSS score of 4.3, published 1 October 2026.
Which products and versions are affected?: TryGhost Ghost 5.42.2 to before 6.58.0.
Is there a fix for CVE-2026-103275?: Yes: fixed in Ghost 6.58.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-103275 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-103275?: Check whether you run TryGhost Ghost at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: Ghost 6.58.0

Technical details

The Admin API bulk post and page edit/delete endpoints accept filter parameters on restricted fields such as authors.password, allowing staff-level attackers to infer other staff users' password hashes based on which filters match. This is an incomplete fix for a prior vulnerability (CVE-2026-70590). The vulnerability requires staff-level privileges and network access to the Admin API, and an attacker gains the ability to perform offline password-guessing attacks against leaked hashes.

Affected products

TryGhost Ghost 5.42.2 to before 6.58.0

Timeline

2026-08-20: disclosed
2026-08-20: patched: Fixed in commit 5ef16abe85e9b71ac3f1b1e2cbc462802efe3b5b
2026-10-01: advisory

References

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