SiteGround Optimizer <= 5.0.12 - Missing Authorization
Published Oct 16, 2024
9.8
CRITICALCVSS 3.1
EPSS 0.85%
Description
The SiteGround Optimizer plugin for WordPress is vulnerable to authorization bypass leading to Remote Code Execution and Local File Inclusion in versions up to, and including, 5.0.12 due to incorrect use of an access control attribute on the switch_php function called via the /switch-php REST API route. This allows attackers to include and execute arbitrary files on the server, allowing the execution of any PHP code in those files. This can be used to bypass access controls, obtain sensitive data, or achieve code execution in cases where images and other “safe” file types can be uploaded and included.
Affected products
- Vendor Siteground Product Speed Optimizer – The All-In-One Performance-Boosting Plugin Defaultunaffected
- Version 0StatusaffectedConstraints<5.0.13
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Siteground | Speed Optimizer – The All-In-One Performance-Boosting Plugin | unaffected |
|
- < 5.0.12
-
- Version 0StatusaffectedConstraints<5.0.13
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Siteground | Speed Optimizer | n/a |
|
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Oct 16, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2024–2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.85% (0.00850) | 56.66th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.83% (0.00827) | 52.50th | v5 (v2026.06.15) |
| Mar 7, 2026 | 9.63% (0.09631) | 92.77th | v4 (v2025.03.14) |
| Jan 15, 2026 | 7.33% (0.07329) | 91.42th | v4 (v2025.03.14) |
| Dec 24, 2025 | 5.53% (0.05534) | 89.95th | v4 (v2025.03.14) |
| Nov 24, 2025 | 4.16% (0.04162) | 88.19th | v4 (v2025.03.14) |
| Nov 21, 2025 | 5.46% (0.05456) | 89.75th | v4 (v2025.03.14) |
| Nov 18, 2025 | 7.46% (0.07458) | 90.85th | v4 (v2025.03.14) |
| May 22, 2025 | 4.65% (0.04651) | 88.75th | v4 (v2025.03.14) |
| Mar 30, 2025 | 2.33% (0.02325) | 83.37th | v4 (v2025.03.14) |
| Mar 29, 2025 | 18.24% (0.18240) | 92.09th | v4 (v2025.03.14) |
| Mar 24, 2025 | 2.23% (0.02230) | 82.99th | v4 (v2025.03.14) |
| Mar 23, 2025 | 8.13% (0.08130) | 90.82th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.31% (0.02312) | 83.64th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.09% (0.00091) | 40.69th | v3 (v2023.03.01) |
| Oct 17, 2024 | 0.09% (0.00091) | 39.82th | v3 (v2023.03.01) |
References (2)
- https://blog.sucuri.net/2019/03/vulnerability-disclosure-siteground-optimizer-caldera-forms.html Press/Media CoverageTechnical Description
- https://www.wordfence.com/threat-intel/vulnerabilities/id/657f3bd7-2cdc-4eb6-ba50-7c7fca468df0?source=cve Third Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://blog.sucuri.net/2019/03/vulnerability-disclosure-siteground-optimizer-caldera-forms.html | Press/Media CoverageTechnical Description | |
| https://www.wordfence.com/threat-intel/vulnerabilities/id/657f3bd7-2cdc-4eb6-ba50-7c7fca468df0?source=cve | Third Party Advisory |
Change history (0)
No recorded changes yet.