CVE-2026-28783 Details
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.
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Exploit prediction scoring system (EPSS) score for CVE-2026-28783
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.1 Probability of exploitation activity being observed over the next 30 days (27th percentile)
CVSS score for CVE-2026-28783
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
9.1 Critical
Products affected by CVE-2026-28783
Craft CMS 4.6.0
Craft CMS 4.7.4
Craft CMS 4.8.0
Craft CMS 5.2.1
Craft CMS 5.5.8
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2026-28783 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 316 52.40%
DE 61 10.12%
GB 52 8.62%
NL 50 8.29%
IE 32 5.31%
CA 30 4.98%
AU 19 3.15%
FR 11 1.82%
SG 6 1.00%
CH 4 0.66%

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CVE-2026-28783 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 498 89.73%
Telecommunications 32 5.77%
Insurance 5 0.90%
Transportation 5 0.90%
Business Services 5 0.90%
Aerospace/Defense 2 0.36%
Tourism/Hospitality 2 0.36%
Nonprofit/NGO 2 0.36%
Real Estate 1 0.18%
Energy/Resources 1 0.18%

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