CVE-2026-33159

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.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-306",
        "CWE-862"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33159.json"
}

References

Affected packages

Git / github.com/craftcms/cms

Affected ranges

Type

GIT

Repo

https://github.com/craftcms/cms

Events

Introduced

daac7c1da2f701f2e9ddee1da1457ce61660b581

Fixed

3262cfa628ade304f0e565f9e45b52fab0f32df3

Introduced

04755d93f86d07cc183db47db8a0eee106892e30

Fixed

13c50dd550fabe74fe5317aeca090d286f1c7556

Fixed

7f0ead833f7c2b91ae12003caad833479dd08592

Database specific

Show details

{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "4.0.0-RC1"
                },
                {
                    "fixed":  "4.17.8"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "introduced":  "5.0.0-RC1"
                },
                {
                    "fixed":  "5.9.14"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "7f0ead833f7c2b91ae12003caad833479dd08592"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "4.17.8",
            "range":  [
                {
                    "fixed":  "3262cfa628ade304f0e565f9e45b52fab0f32df3"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "original_tag":  "5.9.14",
            "range":  [
                {
                    "fixed":  "13c50dd550fabe74fe5317aeca090d286f1c7556"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Type

GIT

Repo

https://github.com/nystudio107/craft-seomatic

Events

Introduced

a31f7d211b52d55d274c66a291310ceec64c733f

Last Affected

a31f7d211b52d55d274c66a291310ceec64c733f

Database specific

Show details

{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:craftcms:craft_cms:4.0.0:-:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "4.0.0-NA"
                },
                {
                    "last_affected":  "4.0.0-NA"
                }
            ],
            "source":  "CPE_STRING"
        }
    ]
}

Affected versions

4.*

4.0.0

4.0.0-NA

4.0.0-rc1

4.0.0-rc2

4.0.0-rc3

5.*

5.0.0-NA

5.0.0-rc1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33159.json"