HOMEVULNERABILITIESCVE-2026-33159
MEDIUM

CVE-2026-33159

CWE-306Published: March 24, 2026· Updated: Mar 26, 2026

6.5
CVSS v3.1
EPSS:0.11%probability of exploitation in 30 daysPercentile:28.8th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-33159 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected Vendors & Products

craftcms1 product
craft cms
Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/craftcms/cms/commit/7f0ead833f7c2b91ae12003caad833479dd08592
ADVISORYhttps://github.com/craftcms/cms/security/advisories/GHSA-6mrr-q3pj-h53w

All References (4)

→
https://github.com/craftcms/cms/commit/7f0ead833f7c2b91ae12003caad833479dd08592Patch
→
https://github.com/craftcms/cms/releases/tag/4.17.8Release Notes
→
https://github.com/craftcms/cms/releases/tag/5.9.14Release Notes
→
https://github.com/craftcms/cms/security/advisories/GHSA-6mrr-q3pj-h53wVendor Advisory

Quick Facts

CVE IDCVE-2026-33159
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-306
CISA KEVNo
EPSS (30d)0.11%
Affected1 vendor
PublishedMar 24, 2026

Related CVEs (CWE-306)

CVE-2026-46846
10.0
CVE-2026-35301
10.0
CVE-2026-20223
10.0
CVE-2026-46803
10.0
CVE-2026-44327
10.0
CVE-2026-23693
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-33159 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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