WordPress security by component
Blocksy Companion
Plugin description
Blocksy Companion adds enhanced customization options, widgets, extensions, and starter content for the Blocksy WordPress theme.
Blocksy Companion (blocksy-companion) is a WordPress plugin with 13 published CVE records in this archive. The latest tracked vulnerability was published Sep 01, 2026; the highest published CVSS base score is 9.8.
Plugin slug:
blocksy-companionLatest vulnerability
CVE-2026-18488: Blocksy Companion dynamic-data blocks permit Author-level stored cross-site scripting
Blocksy Companion through 2.1.51 insufficiently sanitizes and escapes the tagName attribute of the blocksy/dynamic-data block. An Author or higher can store script in page content that executes in the site's origin whenever another user views the affected page.
| Safe version |
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|---|---|---|---|
| Sep 01, 2026 |
CVE-2026-18488
Blocksy Companion dynamic-data blocks permit Author-level stored cross-site scripting
Blocksy Companion through 2.1.51 insufficiently sanitizes and escapes the tagName attribute of the blocksy/dynamic-data block. An Author or higher can store script in page content that executes in the site's origin whenever another user views the affected page.
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See mitigation notes |
CVE6.4
NVDPending
|
| Jul 09, 2026 |
CVE-2026-15158
Blocksy Companion: Dangerous file upload
Blocksy Companion is affected by dangerous file upload. The vulnerable path is reachable without authentication. Successful exploitation can place attacker-controlled executable content on the server and may lead to full site compromise. The published affected range is <= 2.1.46.
|
See mitigation notes |
CVE9.8
NVDPending
|
| Jul 08, 2026 |
CVE-2026-58480
Blocksy Companion: Dangerous file upload
Blocksy Companion is affected by dangerous file upload. The vulnerable path is reachable without authentication. Successful exploitation can place attacker-controlled executable content on the server and may lead to full site compromise. The published affected range is <= 2.1.46.
|
2.1.47 |
CVE9.2
NVDPending
|
| Jun 19, 2026 |
CVE-2026-12430
Blocksy Companion: Cross-site scripting
Blocksy Companion is affected by cross-site scripting. Exploitation requires an authenticated editor account. Injected script can execute in the affected site's origin when the vulnerable output is viewed. The published affected range is <= 2.1.45.
|
See mitigation notes |
CVE4.4
NVDPending
|
| Nov 11, 2025 |
CVE-2025-12846
Blocksy Companion: Dangerous file upload
Blocksy Companion is affected by dangerous file upload. Exploitation requires an authenticated author account. Successful exploitation can place attacker-controlled executable content on the server and may lead to full site compromise.
|
See mitigation notes |
CVE8.8
NVDPending
|
| Oct 30, 2025 |
CVE-2025-12475
Blocksy Companion: Cross-site scripting
Blocksy Companion is affected by cross-site scripting. Exploitation requires an authenticated contributor account. Injected script can execute in the affected site's origin when the vulnerable output is viewed.
|
See mitigation notes |
CVE6.4
NVDPending
|
| Sep 17, 2025 |
CVE-2025-9565
Blocksy Companion: Cross-site scripting
Blocksy Companion is affected by cross-site scripting. Exploitation requires an authenticated contributor account. Injected script can execute in the affected site's origin when the vulnerable output is viewed.
|
See mitigation notes |
CVE6.4
NVDPending
|
| Jun 03, 2024 |
CVE-2024-35633
Blocksy Companion: Server-side request forgery
Blocksy Companion is affected by server-side request forgery. Exposure depends on how the affected operation is made reachable by the site. The vulnerable server can be induced to make attacker-selected network requests.
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See mitigation notes |
CVE4.4
NVD4.9
|
| May 14, 2024 |
CVE-2024-4487
Blocksy Companion: Cross-site scripting
Blocksy Companion is affected by cross-site scripting. Exploitation requires an authenticated contributor account. Injected script can execute in the affected site's origin when the vulnerable output is viewed.
|
See mitigation notes |
CVE6.4
NVD5.4
|
| Apr 11, 2024 |
CVE-2024-31932
Blocksy Companion: Cross-site request forgery
Blocksy Companion is affected by cross-site request forgery. Exposure depends on how the affected operation is made reachable by the site. Exploitation relies on a signed-in privileged user submitting an attacker-controlled request.
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See mitigation notes |
CVE5.4
NVD8.8
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| Mar 22, 2024 |
CVE-2024-2392
Blocksy Companion: Cross-site scripting
Blocksy Companion is affected by cross-site scripting. Exploitation requires an authenticated contributor account. Injected script can execute in the affected site's origin when the vulnerable output is viewed.
|
See mitigation notes |
CVE6.4
NVD5.4
|
| May 02, 2023 |
CVE-2023-1911
Blocksy Companion: A security weakness
Blocksy Companion is affected by a security weakness. Exposure depends on how the affected operation is made reachable by the site. The resulting impact depends on how the affected component exposes the vulnerable operation.
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See mitigation notes |
CVE4.3
NVD4.3
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| Apr 06, 2023 |
CVE-2023-23898
Blocksy Companion: Cross-site scripting
Blocksy Companion is affected by cross-site scripting. Exposure depends on how the affected operation is made reachable by the site. Injected script can execute in the affected site's origin when the vulnerable output is viewed.
|
See mitigation notes |
CVE5.5
NVD5.4
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