CVE-2026-87780 LTL Freight Quotes CVE debrief

Who should care

Defenders responsible for WordPress plugin management and security, particularly those using the LTL Freight Quotes plugin, should assess exposure and prioritize updating to version 4.2.19 or later.

Why it matters

Defenders should prioritize verifying and updating the LTL Freight Quotes plugin to version 4.2.19 or later, and monitor for potential administrative page views that could lead to XSS exploitation, as the plugin's lack of input sanitization and escaping poses a risk of Stored XSS.

• Potential for Stored XSS exploitation in administrative sessions
• Need for verification and updating of the LTL Freight Quotes plugin
• Monitoring for potential administrative page views that could lead to XSS exploitation
• Limited information available on potential exploitation or affected versions beyond the plugin's version 4.2.19

Technical summary

The LTL Freight Quotes WordPress plugin before 4.2.19 does not properly sanitize and escape values submitted through an unauthenticated endpoint, leading to Stored XSS. This vulnerability allows attackers to execute malicious scripts in the session of any administrator viewing the affected page. The plugin's lack of input sanitization and escaping poses a risk of Stored XSS, which can be exploited through administrative page views. Defenders should prioritize verifying and updating the LTL Freight Quotes plugin to version 4.2.19 or later.

Defensive priority

Defenders should prioritize verifying and updating the LTL Freight Quotes plugin to version 4.2.19 or later, and monitor for potential administrative page views that could lead to XSS exploitation.

Recommended defensive actions

• Verify and update the LTL Freight Quotes plugin to version 4.2.19 or later
• Monitor for potential administrative page views that could lead to XSS exploitation
• Review and sanitize values submitted through unauthenticated endpoints
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and source item provide details on the vulnerability, but limited information is available on potential exploitation or affected versions beyond the plugin's version 4.2.19. Defenders should verify and update the LTL Freight Quotes plugin to version 4.2.19 or later and monitor for potential administrative page views that could lead to XSS exploitation. The source item and CVE record provide evidence of the vulnerability, but additional verification is necessary to ensure affected systems are identified and remediated.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.