CVE-2026-111278 nivocart CVE debrief

Who should care

Defenders responsible for NivoCart installations, especially those using version 2.5.1 or earlier, should assess exposure and consider remediation. This includes operators, platform administrators, vulnerability management teams, and security teams who need to verify the presence of this vulnerability in their installations and prioritize remediation to prevent potential automated malicious activities.

Why it matters

CVE-2026-111278 is a medium-severity CAPTCHA bypass vulnerability in NivoCart through version 2.5.1. Defenders should verify the presence of this vulnerability in their installations and prioritize remediation to prevent potential automated malicious activities.

• Potential for automated spam submissions
• Risk of unauthorized account creation
• Possible increase in malicious reviews or feedback
• Potential for automated account deletion requests

Technical summary

The vulnerability exists in NivoCart through version 2.5.1, where the CAPTCHA answer is disclosed in the page HTML, allowing attackers to bypass form protection and automate malicious requests. This could lead to automated spam, registrations, reviews, and account deletion requests. Defenders should prioritize verifying the presence of this vulnerability in their NivoCart installations, especially if version 2.5.1 or earlier is in use, and consider upgrading to a patched version if available. The CVE Program and NVD have confirmed the vulnerability.

Defensive priority

Defenders should prioritize verifying the presence of this vulnerability in their NivoCart installations, especially if version 2.5.1 or earlier is in use, and consider upgrading to a patched version if available.

Recommended defensive actions

• Verify NivoCart version and check for upgrades to a patched version
• Review and adjust CAPTCHA implementation to prevent bypass
• Monitor for suspicious activity related to automated requests
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The vulnerability is confirmed by the CVE Program and NVD. The source item provides details on the vulnerability, including its impact and potential exploitation. However, there is no information on known exploitation or specific attacks.

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.