CVE-2024-51719: WordPress Simplistic SEO plugin <= 2.3.0 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Roman Peterhans Simplistic SEO simplistic-seo allows Reflected XSS.This issue affects Simplistic SEO: from n/a through <= 2.3.0.
Security readout for executives and security teams
Plain-English summary
CVE-2024-51719 is a reflected cross-site scripting flaw in the WordPress Simplistic SEO plugin through version 2.3.0. A successful attack could make a victim's browser run attacker-controlled script after user interaction, affecting confidentiality, integrity, and availability at a limited level.
Executive priority
Treat this as a high-priority WordPress plugin exposure check. Prioritize public-facing WordPress sites, especially those used by administrators or content editors, and confirm whether an official fix exists before assuming remediation is complete.
Technical view
The issue is CWE-79 improper input neutralization during web page generation in Roman Peterhans Simplistic SEO. The CVSS 3.1 score is 7.1 with network attack vector, low complexity, no privileges required, required user interaction, and changed scope.
Likely exposure
Exposure is limited to WordPress sites with the Simplistic SEO plugin installed and active at version 2.3.0 or earlier. The provided data does not include CPEs or deployment prevalence.
Exploitation context
The source bundle does not mark this CVE as KEV and provides no evidence of active exploitation. The CVSS vector indicates exploitation is remote but requires user interaction, consistent with reflected XSS risk.
Researcher notes
Evidence is limited to the CVE record and Patchstack reference in the bundle. The description identifies reflected XSS but does not name the vulnerable parameter, endpoint, proof of concept, exploit activity, or fixed version.
Mitigation direction
Inventory WordPress sites for Simplistic SEO and record plugin versions.
Check vendor and Patchstack guidance for an official fixed version or mitigation.
Update the plugin if a vendor-supported fixed release is available.
Disable or remove the plugin where it is not business-critical.
Apply WAF or browser-side protections as compensating controls where appropriate.
Validation and detection
Confirm whether Simplistic SEO is installed and active on each WordPress site.
Verify installed versions are not 2.3.0 or earlier.
Review vendor, CVE, and Patchstack records for updated remediation guidance.
Check web security logs for unusual reflected XSS indicators without testing payloads.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
cwe · medium confidence lookup
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-79 · source CWE mapping
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.