ConvertKit < 2.2.1 - Reflected XSS
Priority MEDIUM 60Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
The ConvertKit WordPress plugin before 2.2.1 does not escape a parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00458 39th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix Fixed ConvertKit (Unknown): 2.2.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | ConvertKit | before 2.2.1 | 2.2.1 | Patch available | CNA |
- ConvertKit VendorUnknown Affected before 2.2.1 Fixed in 2.2.1 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:convertkit:convertkit_-_email_marketing\,_email_newsletter_and_landing_pages:*:*:*:*:*:wordpress:*:* | before 2.2.1 | Vulnerable | ConvertKit |
- cpe:2.3:a:convertkit:convertkit_-_email_marketing\,_email_newsletter_and_landing_pages:*:*:*:*:*:wordpress:*:* Versions before 2.2.1 Vulnerable ·ConvertKit
Remediation
- Fix · CNA ConvertKit (Unknown) Fixed in 2.2.1
Timeline
- 2026-10-02 Threatist record created from CVE-2023-2337
- 2026-10-03 Alias added: GHSA-mc63-jfph-4vpx
References
More Convertkit - Email Marketing, Email Newsletter And Landing Pages vulnerabilities
- TI-2022-04121 ConvertKit < 2.0.5 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
- TI-2024-20621 WordPress ConvertKit plugin <= 2.4.5 - Email Disclosure in Log File vulnerability CVSS 3.1HIGH 7.5
- TI-2024-03695 ConvertKit <= 2.4.9 - Missing Authorization CVSS 3.1MEDIUM 5.3
Sources
- CVE-2023-2337 · CVE Program
- CVE-2023-2337 · NVD
- FIRST EPSS
- GHSA-mc63-jfph-4vpx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences