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Plugin Vulnerability Hub
Plugin 2 known issues Latest disclosed Mar 20, 2023

Klaviyo Vulnerabilities

Review known vulnerability records for the WordPress plugin Klaviyo (`klaviyo`), including severity, CVE references, affected versions, and patch status.

Recent tracked CVEs on this page include CVE-2023-0874 and CVE-2023-25456, so operators can jump from disclosure to patch validation without scanning the full feed first.

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Known Records
2
High or Critical
0
Patch Coverage
100%
Last Updated
Jan 22, 2024
Related Security Guides

Use these guides while reviewing Klaviyo fixes

Pair this plugin vulnerability hub with practical WordPress hardening, scanner, and patch workflow guidance.

Hardening
WordPress hardening checklist for exposed plugins

Review patch cadence, privileged access, XML-RPC exposure, backups, and monitoring controls.
Plugin Security
WordPress plugin security basics for patch decisions

Use ownership, update testing, least privilege, and removal criteria to reduce plugin risk.
Scanning
WordPress vulnerability scanner buyer's guide

Compare scanner coverage for plugin CVEs, version detection, alert noise, and remediation workflow.
Patch Decision Workflow

How to prioritize Klaviyo remediation

Use the hub as a decision layer before opening individual records: confirm whether the issue has a CVE, whether a fixed version exists, and whether the affected range overlaps production installs.

Search-Ready Records
2
1. Match the Package
Confirm the installed WordPress plugin slug is klaviyo before acting on any CVE from this cluster.
2. Sort by Severity
Start with 0 high or critical records, then review medium and unrated findings with public references.
3. Check Patch Evidence
2 records include a patch path; verify compatibility before closing the finding.
4. Monitor Gaps
0 records still lack a listed fixed release, so keep this hub in the review queue.
High-Signal Remediation Targets
CVE-2023-0874 Medium
Stored Cross-Site Scripting remediation for Klaviyo

Affected range: Versions up to 3.0.9. Fixed version: 3.0.10.

CVE-2023-25456 Medium
Stored Cross-Site Scripting remediation for Klaviyo

Affected range: Versions up to 3.0.7. Fixed version: 3.0.8.

Priority CVE Quick Links

Fast paths into Klaviyo CVE reports

Start with the highest-signal CVE records for this WordPress plugin before scanning the full vulnerability feed.

Indexed CVEs
2
Tracked CVE Issue Type Affected Versions Fixed Version CVSS
CVE-2023-0874
Klaviyo <= 3.0.9 - Authenticated (Admin+) Stored Cross-Site Scripting
 Stored Cross-Site Scripting Versions up to 3.0.9 3.0.10 CVSS 4.4
CVE-2023-25456
Klaviyo <= 3.0.7 - Authenticated (Administrator+) Stored Cross-Site Scripting
 Stored Cross-Site Scripting Versions up to 3.0.7 3.0.8 CVSS 4.4
CVE-2023-0874 Medium 3.0.10
CVE-2023-0874 Klaviyo Stored Cross-Site Scripting

Klaviyo <= 3.0.9 - Authenticated (Admin+) Stored Cross-Site Scripting

CVE-2023-25456 Medium 3.0.8
CVE-2023-25456 Klaviyo Stored Cross-Site Scripting

Klaviyo <= 3.0.7 - Authenticated (Administrator+) Stored Cross-Site Scripting

Coverage Snapshot

What this page helps you verify fast

This hub clusters tracked records for Klaviyo so operators can confirm whether a disclosed issue maps to the installed slug, version range, and patch path.

Patch Visibility
2 records include a published patch path, leaving 0 with no listed safe release yet.
Severity Mix
0 critical and 0 high severity findings.
Recent CVEs
CVE-2023-0874 and CVE-2023-25456
Reference Workflow
Jump from the hub into the full report when you need remediation notes, exploit context, CVSS vectors, or source references.
Triage First

Open the records most likely to drive action

These recent records surface the CVE strings, patch cues, and direct report links most operators need first.

Known Vulnerabilities

Reports for Klaviyo

Sorted by latest disclosure date so newly published issues surface first.

Plugin Medium Patched: Yes CVE-2023-0874
CVE-2023-0874: Klaviyo <= 3.0.9 - Authenticated (Admin+) Stored Cross-Site Scripting

The Klaviyo plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in versions up to, and including, 3.0.9 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permis...

Published
Mar 20, 2023
Patched Release
3.0.10
Affected Versions
Versions up to 3.0.9
Next Step
Update to 3.0.10 or newer if supported.
Review CVE-2023-0874 fixed version details Open CVE Reference
Plugin Medium Patched: Yes CVE-2023-25456
CVE-2023-25456: Klaviyo <= 3.0.7 - Authenticated (Administrator+) Stored Cross-Site Scripting

The Klaviyo plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in versions up to, and including, 3.0.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permis...

Published
Mar 13, 2023
Patched Release
3.0.8
Affected Versions
Versions up to 3.0.7
Next Step
Update to 3.0.8 or newer if supported.
Review CVE-2023-25456 fixed version details Open CVE Reference