Is CVE-2026-124427 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-124427 being exploited in the wild.

How severe is CVE-2026-124427?

Critical severity, with a CVSS score of 9.8, published 8 November 2026.

Is there a fix for CVE-2026-124427?

Yes: fixed in 5.11.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-124427 attacked?

It is attacked over the network.

Am I affected by CVE-2026-124427?

Check whether you run Craft CMS 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-2026-124427: Craft CMS authorization bypass in GraphQL schema scope

CVE-2026-124427 · Severity: critical · CVSS 9.8 · Published 2026-11-08

Craft CMS is a content management system used to build websites and applications. An authorization flaw allows anonymous attackers to read restricted content from the GraphQL API by exploiting navigation fields, exposing section entries that administrators intentionally hid from public access. An attacker needs only the GraphQL endpoint URL to enumerate and read titles, slugs, and custom field data from restricted sections.

Technologies: Craft CMS. Vendors: Craft.

Quick answers

Is CVE-2026-124427 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-124427 being exploited in the wild.
How severe is CVE-2026-124427?: Critical severity, with a CVSS score of 9.8, published 8 November 2026.
Which products and versions are affected?: Craft CMS 5.0.0 before 5.11.2.
Is there a fix for CVE-2026-124427?: Yes: fixed in 5.11.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-124427 attacked?: It is attacked over the network.
Am I affected by CVE-2026-124427?: Check whether you run Craft CMS 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: 5.11.2

Technical details

The vulnerability is an authorization bypass (CWE-862) in Craft CMS's GraphQL schema scope enforcement. Anonymous clients can traverse out-of-scope section entries by chaining prev/next fields from a visible in-scope entry, bypassing the schema-based access control. The attack requires GraphQL API to be enabled with a public or scoped schema that grants read access to at least one section while withholding another that shares an entry type; no authentication, session, or user interaction is needed.

Affected products

Craft CMS 5.0.0 before 5.11.2

Timeline

2026-10-23: disclosed
2026-11-08: advisory

References

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