EUVD-2026-45127
GHSA-j6r6-rp64-mqcr
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Network-exploitable with low privileges (subscriber); integrity is limited because only .xls/.xlsx extensions are writable, no confidentiality or availability impact.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Lifecycle Timeline
2DescriptionCVE.org
The Ninja Forms - Excel Export plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 3.3.6 via the 'spreadsheet_export_tmp_name' parameter. This makes it possible for authenticated attackers, with subscriber-level access and above, to write .xls/.xlsx files to arbitrary locations on the server, which can be used to stage further attacks.
AnalysisAI
Directory traversal in the Ninja Forms - Excel Export WordPress plugin (versions ≤ 3.3.6) allows authenticated attackers with subscriber-level access to write .xls/.xlsx files to arbitrary server-side locations via the unsanitized 'spreadsheet_export_tmp_name' parameter. The vulnerability is a staging primitive: direct code execution is not possible through the traversal alone, but file placement in web-accessible or sensitive directories can enable follow-on attacks such as information disclosure or overwriting existing files. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the Ninja Forms - Excel Export plugin to be installed and active on a WordPress site running version 3.3.6 or earlier. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 4.3 (Medium) reflects the real-world constraints well: the attack vector is network, complexity is low, but Low Privilege (subscriber-level authentication) is required, and the integrity impact is limited because only .xls/.xlsx file types can be written. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker registers a free WordPress subscriber account on a site with open registration, then submits a crafted export request containing a path traversal sequence (e.g., '../../../wp-content/uploads/shell.xlsx') in the 'spreadsheet_export_tmp_name' parameter, causing the plugin to write a malicious spreadsheet file into an unintended directory. Depending on server configuration, this file placement could overwrite existing content or be retrieved directly via HTTP, potentially enabling further exploitation through a secondary vulnerability that processes the planted file. |
| Remediation | Update the Ninja Forms - Excel Export plugin to a version beyond 3.3.6 as soon as one is available; consult the Wordfence advisory at https://www.wordfence.com/threat-intel/vulnerabilities/id/24fb24cc-c29f-4d2d-87ba-5d211386e7dd for the confirmed fixed release version, which was not independently confirmed in the available input data. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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