The WebStack theme for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the io_img_upload() function in all versions up to, and including, 1.2024. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Owen | WebStack | unaffected |
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Project Subscriptions
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Advisories
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Fixes
Solution
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Workaround
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References
History
Wed, 15 Apr 2026 04:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | The WebStack theme for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the io_img_upload() function in all versions up to, and including, 1.2024. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. | |
| Title | WebStack <= 1.2024 - Unauthenticated Arbitrary File Upload | |
| Weaknesses | CWE-434 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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MITRE
Status: PUBLISHED
Assigner: Wordfence
Published:
Updated: 2026-04-15T03:37:20.474Z
Reserved: 2026-01-28T17:18:24.254Z
Link: CVE-2026-1555
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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Weaknesses