Quick answers
- Is CVE-2026-115938 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-115938 being exploited in the wild.
- How severe is CVE-2026-115938?
- High severity, with a CVSS score of 8.8, published 23 October 2026.
- Which products and versions are affected?
- Craft CMS.
- Is there a fix for CVE-2026-115938?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-115938 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-115938?
- Check whether you run Craft CMS. 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.
Technical details
A two-stage vulnerability: first, an authenticated user submits an element-search condition with a crafted element selector that bypasses Twig's SecurityPolicy sandbox by using Yii's ArrayHelper for property lookup, leaking the security key via a character-oracle side channel. Second, the attacker forges HMAC-signed parameters and passes them to View::renderObjectTemplate(), which evaluates untrusted Twig templates outside the sandbox, allowing PHP code execution through Twig's string-callable form.
Affected products
- Craft CMS
Timeline
- 2026-10-23: disclosed