Formidable Form Builder < 2.05.03 - Unauthenticated Stored Cross-Site Scripting
Published Oct 16, 2024
8.3
HIGHCVSS 3.1
EPSS 1.09%
Description
The Formidable Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple parameters submitted during form entries like 'after_html' in versions before 2.05.03 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute in a victim's browser.
Affected products
-
- Version 0StatusaffectedConstraints<2.05.03
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Strategy11team | n/a | unaffected |
|
- < 2.05.03
-
- Version 0StatusaffectedConstraints<2.05.03
- 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 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Strategy11 | Formidable Forms | 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:R/S:C/C:L/I:L/A:N
1 other source (CVE.org) ▾
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
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
PartialDecision
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 | 1.09% (0.01087) | 64.07th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.00% (0.00999) | 58.06th | v5 (v2026.06.15) |
| Jun 4, 2026 | 24.41% (0.24408) | 96.21th | v4 (v2025.03.14) |
| Jun 3, 2026 | 19.55% (0.19546) | 95.52th | v4 (v2025.03.14) |
| May 28, 2026 | 24.46% (0.24456) | 96.20th | v4 (v2025.03.14) |
| May 22, 2026 | 19.99% (0.19995) | 95.56th | v4 (v2025.03.14) |
| Mar 7, 2026 | 28.74% (0.28738) | 96.45th | v4 (v2025.03.14) |
| Feb 23, 2026 | 23.29% (0.23292) | 95.83th | v4 (v2025.03.14) |
| Feb 20, 2026 | 27.46% (0.27464) | 96.30th | v4 (v2025.03.14) |
| Jan 18, 2026 | 22.17% (0.22167) | 95.62th | v4 (v2025.03.14) |
| Jan 15, 2026 | 26.47% (0.26470) | 96.16th | v4 (v2025.03.14) |
| Jan 4, 2026 | 29.48% (0.29483) | 96.44th | v4 (v2025.03.14) |
| Dec 27, 2025 | 24.46% (0.24464) | 95.95th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.07% (0.00065) | 17.46th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00052) | 22.37th | v3 (v2023.03.01) |
| Oct 17, 2024 | 0.05% (0.00052) | 21.43th | v3 (v2023.03.01) |
References (3)
- https://klikki.fi/adv/formidable.html ExploitThird Party Advisory
- https://wordpress.org/plugins/formidable/#developers Product
- https://www.wordfence.com/threat-intel/vulnerabilities/id/900fcaab-2424-4ae8-af18-95659db0dbe3?source=cve Third Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://klikki.fi/adv/formidable.html | ExploitThird Party Advisory | |
| https://wordpress.org/plugins/formidable/#developers | Product | |
| https://www.wordfence.com/threat-intel/vulnerabilities/id/900fcaab-2424-4ae8-af18-95659db0dbe3?source=cve | Third Party Advisory |
Change history (0)
No recorded changes yet.