What it is
CVE-2021-24219 is an unauthenticated All Thrive Themes and Plugins - Unauthenticated Option Update. The Thrive Optimize WordPress plugin before 1.4.13.3, Thrive Comments WordPress plugin before 1.4.15.3, Thrive...
Vulnerability report
Exploited in the wild
High confidence
Not in CISA KEV
CVE-2021-24219
All Thrive Themes and Plugins - Unauthenticated Option Update
Thrive Themes / Thrive Optimize · affected before 1.4.13.3
- Severity
- CVSS 5.3 · Medium
- Confidence
- High
- Exploit status
- Exploited in the wild
- EPSS
- 2.1%
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is high.
Who is affected?
Thrive Themes / Thrive Optimize affected before 1.4.13.3.
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
All Thrive Themes and Plugins - Unauthenticated Option Update
The Thrive Optimize WordPress plugin before 1.4.13.3, Thrive Comments WordPress plugin before 1.4.15.3, Thrive Headline Optimizer WordPress plugin before 1.3.7.3, Thrive Leads WordPress plugin before 2.3.9.4, Thrive Ultimatum WordPress plugin before 2.3.9.4, Thrive Quiz Builder WordPress plugin before 2.3.9.4, Thrive Apprentice WordPress plugin before 2.3.9.4, Thrive Visual Editor WordPress plugin before 2.6.7.4, Thrive Dashboard WordPress plugin before 2.3.9.3, Thrive Ovation WordPress plugin before 2.4.5, Thrive Clever Widgets WordPress plugin before 1.57.1 and Rise by Thrive Themes WordPress theme before 2.0.0, Ignition by Thrive Themes WordPress theme before 2.0.0, Luxe by Thrive Themes WordPress theme before 2.0.0, FocusBlog by Thrive Themes WordPress theme before 2.0.0, Minus by Thrive Themes WordPress theme before 2.0.0, Squared by Thrive Themes WordPress theme before 2.0.0, Voice WordPress theme before 2.0.0, Performag by Thrive Themes WordPress theme before 2.0.0, Pressive by Thrive Themes WordPress theme before 2.0.0, Storied by Thrive Themes WordPress theme before 2.0.0, Thrive Themes Builder WordPress theme before 2.2.4 register a REST API endpoint associated with Zapier functionality. While this endpoint was intended to require an API key in order to access, it was possible to access it by supplying an empty api_key parameter in vulnerable versions if Zapier was not enabled.
Attackers could use this endpoint to add arbitrary data to a predefined option in the wp_options table.
Vendor
Product
Affected
Status
Thrive Themes
Thrive Optimize
Before 1.4.13.3
Affected
Thrive Themes
Thrive Comments
Before 1.4.15.3
Affected
Thrive Themes
Thrive Headline Optimizer
Before 1.3.7.3
Affected
Thrive Themes
Thrive Leads
Before 2.3.9.4
Affected
Thrive Themes
Thrive Ultimatum
Before 2.3.9.4
Affected
Thrive Themes
Thrive Quiz Builder
Before 2.3.9.4
Affected
Thrive Themes
Thrive Apprentice
Before 2.3.9.4
Affected
Thrive Themes
Thrive Visual Editor
Before 2.6.7.4
Affected
Thrive Themes
Thrive Dashboard
Before 2.3.9.3
Affected
Thrive Themes
Thrive Ovation
Before 2.4.5
Affected
Thrive Themes
Thrive Clever Widgets
Before 1.57.1
Affected
Thrive Themes
Rise by Thrive Themes
Before 2.0.0
Affected
Thrive Themes
Ignition by Thrive Themes
Before 2.0.0
Affected
Thrive Themes
Luxe by Thrive Themes
Before 2.0.0
Affected
Thrive Themes
FocusBlog by Thrive Themes
Before 2.0.0
Affected
Thrive Themes
Minus by Thrive Themes
Before 2.0.0
Affected
Thrive Themes
Squared by Thrive Themes
Before 2.0.0
Affected
Thrive Themes
Voice
Before 2.0.0
Affected
Thrive Themes
Performag by Thrive Themes
Before 2.0.0
Affected
Thrive Themes
Pressive by Thrive Themes
Before 2.0.0
Affected
Thrive Themes
Storied by Thrive Themes
Before 2.0.0
Affected
Thrive Themes
Thrive Themes Builder
Before 2.2.4
Affected
- Published
- 12 Apr 2021
- Exploitation Reported
- 24 Mar 2021
- Attack vector
- Remote
- Complexity
- Low
- Privileges
- None
- User interaction
- None
Tags
wordpress
nuclei_scanner
CVE References
- CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2021-24219
- wpscan.com/vulnerability/35acd2d8-85fc-4af5-8f6c-224fa7... wpscan.com · CVE Record https://wpscan.com/vulnerability/35acd2d8-85fc-4af5-8f6c-224fa7d92900
- wordfence.com/blog/2021/03/recently-patched-vulnerability-... wordfence.com · CVE Record https://www.wordfence.com/blog/2021/03/recently-patched-vulnerability...
Exploitation evidence
Why KEV Intelligence marks this CVE as exploited
Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.
Exploited in the wild
Wordfence
Independent exploitation attestation added to the KEV Intelligence record.
Proof of concept available
Nuclei Templates
Public scanner or PoC coverage increases practical exploitability.
Known exploited vulnerability sources
Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| Wordfence First | 2021-03-24 10:36 UTC |
Detection
Operational artifacts and observed signals
Make the evidence actionable in scanner, SOC, and edge-control workflows.
Observed signals
- Request targets
- 0
- User-Agents
- 0
Raw values available in Pro and Enterprise.
Scanner coverage
Nuclei template detected 01 Jun 2026.
View Nuclei template (opens in new tab)Virtual patch status
No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.
Learn about virtual patches →Scanner Artifacts
Scanner and exploit-framework references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-24219.yaml | 01 Jun 2026 |
Risk and context
Severity, weaknesses, and research context
CVSS v3.1
5.3
Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS
2.1%
Weaknesses
All CVSS Scores
CVSS v3.1
5.3
Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v2.0
5.0
Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
All Thrive Themes and Plugins - Unauthenticated Option Update
nuclei · Created Unknown
Timeline
From disclosure to observed exploitation
-
Public PoC available
Public proof-of-concept code published
-
Nuclei template available
Scanner coverage available
-
CVE published
Vulnerability disclosed publicly
-
Added to KEV Intelligence KEV Feed
High-confidence, third-party attested exploitation
-
CVE ID reserved
Identifier reserved by the CNA
Pro API
Automate this intelligence
Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
- Evidence confidence and provenance
- First-party sensor telemetry
- PoC and scanner references
- Affected versions and enrichment
- Automation-ready JSON delivery
GET /api/v2/pro/kevs/CVE-2021-24219
Free JSON includes basic KEV fields{
"cve_id": "CVE-2021-24219",
"confidence": "High",
"cvss_score": 5.3,
"cvss_estimated": false,
"epss_score": 0.02059,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}Early warning alerts
Get alerts on high-impact exploitation
Receive curator-selected alerts when exploitation activity warrants attention. Each alert includes the evidence and context needed to decide what requires attention now.