CVE-2026-28783Craft is a content management system (CMS).
Updated under an hour ago ()
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It affects craftcms craft_cms. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Craft is a content management system (CMS). Prior to 5.9.0-beta.1 and 4.17.0-beta.1, Craft CMS implements a blocklist to prevent potentially dangerous PHP functions from being called via Twig non-Closure arrow functions. In order to be able to successfully execute this attack, you need to either have allowAdminChanges enabled on production, or a compromised admin account, or an account with access to the System Messages utility. Several PHP functions are not included in the blocklist, which could allow malicious actors with the required permissions to execute various types of payloads, including RCEs, arbitrary file reads, SSRFs, and SSTIs. This vulnerability is fixed in 5.9.0-beta.1 and 4.17.0-beta.1.
- CVSS
- 9.1 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-94, CWE-184, CWE-1336
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
craftcms craft_cms craftcms:craft_cms | after 4.0.0 before 4.17.0; after 5.0.0 before 5.9.0; 4.0.0; 4.0.0; 4.0.0; 4.0.0; 5.0.0; 5.0.0 | NVD |
References
- https://github.com/craftcms/cms/pull/18208issue-tracking, patch
- https://github.com/craftcms/cms/security/advisories/GHSA-5fvc-7894-ghp4patch, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.