Upcasted S3 Offload – AWS S3, DigitalOcean Spaces, Backblaze, MinIO Storage Integration vulnerabilities
Plugin slug upcasted-s3-offload · 3 known vulnerabilities · latest disclosed 2026-10-09 · WordPress.org page
2 vulnerabilities have no fixed version yet. If you use this plugin, consider disabling or replacing it until a fix is released.
0 of 3 rated high or critical (CVSS 7 or more).
Known vulnerabilities in Upcasted S3 Offload – AWS S3, DigitalOcean Spaces, Backblaze, MinIO Storage Integration
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| Medium 4.3 | <= 3.1.0 | No fix yet | CVE-2026-62035 | 2026-10-09 | Advisory |
| Medium 6.4 | <= 3.0.3 | 3.0.4 | CVE-2025-22676 | 2025-02-03 | Advisory |
| Medium 6.1 | 2.0.0 to 3.0.2 | No fix yet | CVE-2023-33999 | 2023-07-18 | Advisory |
Check if a site is affected
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Questions
Is the Upcasted S3 Offload – AWS S3, DigitalOcean Spaces, Backblaze, MinIO Storage Integration plugin safe to use?
2 known issue(s) have no fix yet, so check the table above before using it.
How do I check which version of Upcasted S3 Offload – AWS S3, DigitalOcean Spaces, Backblaze, MinIO Storage Integration my site runs?
In WordPress go to Plugins > Installed Plugins. From the outside, the free PluginPeek scan below reads the version from the site's public files.
How do I fix a vulnerable plugin?
Make a full backup, then update it from Dashboard > Updates and check the site afterwards. If you would rather not, we can do it for a fixed $99, paid after you have checked the site.