EUVD-2026-39663
GHSA-98gc-mw7m-prrh
Severity by source
AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Admin-only upload sets PR:H with AV:N/AC:L/UI:N; webshell RCE yields C/I/A:H, but the compromise stays within the same WordPress host so S:U rather than S:C.
Primary rating from Vendor (patchstack).
CVSS VectorVendor: patchstack
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionCVE.org
Administrator Arbitrary File Upload in TemplateSpare <= 4.2.0 versions.
AnalysisAI
Arbitrary file upload in the TemplateSpare WordPress plugin (versions 4.2.0 and earlier) allows an authenticated administrator-level user to upload files of dangerous types, enabling deployment of a PHP web shell and full server compromise. The flaw was reported by Patchstack and carries a CVSS of 9.1, but exploitation requires existing high-privilege (Administrator) access. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated WordPress account with Administrator privileges (CVSS PR:H), and the TemplateSpare plugin (<= 4.2.0) must be installed and active. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Signals conflict in a way defenders should weigh carefully. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has obtained WordPress Administrator access - via credential theft, phishing, or an over-provisioned internal account - uses the TemplateSpare upload functionality to upload a PHP web shell instead of a legitimate template asset. They then browse to the uploaded file to execute commands, establishing persistent remote control of the site and underlying host. … |
| Remediation | No vendor-released patch version was identified in the provided data; consult the Patchstack advisory (https://patchstack.com/database/wordpress/plugin/templatespare/vulnerability/wordpress-templatespare-plugin-4-2-0-arbitrary-file-upload-vulnerability?_s_id=cve) and the WordPress.org plugin page for an updated release above 4.2.0 and upgrade as soon as one is available. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Audit all TemplateSpare installations for versions 4.2.0 or earlier; disable the plugin immediately if non-critical. …
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Same technique File Upload
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External POC / Exploit Code
Leaving vuln.today