CVE-2026-50279

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Source
https://cve.org/CVERecord?id=CVE-2026-50279
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50279.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-50279
Aliases
Published
2026-07-01T23:31:31.101Z
Modified
2026-07-15T01:48:52.971295953Z
Severity
  • 7.6 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Craft CMS: Authorship spoofing in `entries/save-entry` via pre-check/post-mutation authorization gap
Details

Craft CMS is a content management system (CMS). IN versions 5.0.0-RC1 and above prior to 5.9.21, theEntriesController::actionSaveEntry() performs entry-edit permission checks before request-controlled author changes are applied to the model, allowing for authorship spoofing. The subsequent author mutation path accepts attacker-supplied authors / author parameters and allows the change when the current user is one of the old authors. Because the controller does not re-run authorization after mutating the author list, a low-privileged user can reassign an entry’s authorship to another user without holding the dedicated peer-author-change permission. This issue has been fixed in version 5.9.21.

Database specific 
{
    "cwe_ids": [
        "CWE-285"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50279.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/craftcms/cms

Affected ranges

Type
GIT
Repo
https://github.com/craftcms/cms
Events
Introduced
04755d93f86d07cc183db47db8a0eee106892e30
Fixed
9cc493be8b414d7116c7f2bc2a6d0926e73f1248
Database specific 
{
    "extracted_events": [
        {
            "introduced": "5.0.0-RC1"
        },
        {
            "fixed": "5.9.21"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50279.json"