CVE-2026-33159 Details
Craft CMS is a content management system (CMS). From version 4.0.0-RC1 to before version 4.17.8 and from version 5.0.0-RC1 to before version 5.9.14, guest users can access Config Sync updater index, obtain signed data, and execute state-changing Config Sync actions (regenerate-yaml, apply-yaml-changes) without authentication. This issue has been patched in versions 4.17.8 and 5.9.14.
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Exploit prediction scoring system (EPSS) score for CVE-2026-33159
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%).
0.31 Probability of exploitation activity being observed over the next 30 days (22nd percentile)
CVSS score for CVE-2026-33159
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.
6.5 Medium
Products affected by CVE-2026-33159
Craft CMS 5.5.9
Craft CMS 5.6.13
Craft CMS 4.4.17
Craft CMS 4.10.6
Craft CMS 4.2.8
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-2026-33159 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 206 50.99%
DE 48 11.88%
GB 39 9.65%
NL 35 8.66%
IE 18 4.46%
AU 17 4.21%
CA 16 3.96%
FR 7 1.73%
FI 3 0.74%
IR 2 0.50%

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CVE-2026-33159 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 335 88.39%
Telecommunications 31 8.18%
Business Services 3 0.79%
Nonprofit/NGO 2 0.53%
Real Estate 2 0.53%
Education 2 0.53%
Manufacturing 1 0.26%
Aerospace/Defense 1 0.26%
Healthcare/Wellness 1 0.26%
Transportation 1 0.26%

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