CVE-2026-65319 Feedbin CVE debrief

Who should care

Users of Feedbin, especially those with private newsletters, personal page-saves, or articles from private subscriptions, should be aware of this vulnerability and take necessary actions to protect their content. Operators of Feedbin instances should review their configurations and update to a secure version to prevent exploitation. Vulnerability management and security teams should prioritize updating Feedbin to a secure version and review compensating controls for exposed systems.

Technical summary

The vulnerability exists in the GET /api/v2/entries/:id/text endpoint, where attackers can iterate sequential integer entry IDs to enumerate and extract plain-text content of all stored articles. This includes private newsletter content, personal page-saves, and articles from any user's private subscriptions. The vulnerability is caused by the API endpoint skipping the authorization before-action filter entirely, allowing unauthenticated access to sensitive content.

Defensive priority

High priority should be given to updating Feedbin to a secure version, as the vulnerability has a high CVSS score of 8.7. Defenders should also review and restrict access to the entries text API endpoint, monitor for suspicious activity on the Feedbin instance, and consider implementing additional security measures, such as authentication and authorization for API endpoints. Given the high severity of this vulnerability, immediate action is necessary to prevent potential exploitation and protect sensitive content. This vulnerability is considered a high-priority issue due to its potential impact on Feedbin users with private content, and defenders should take swift action to mitigate the risk of exploitation and protect their environments. The high CVSS score of 8.7 indicates a severe vulnerability that requires immediate attention and remediation to prevent potential data breaches and unauthorized access to sensitive information. Therefore, defenders should treat this vulnerability as a high-priority issue and take necessary actions to protect their environments and prevent potential exploitation. The vulnerability's high severity and potential impact on Feedbin users make it a critical issue that requires prompt attention and remediation to prevent potential exploitation and protect sensitive content. As such, defenders should prioritize updating Feedbin to a secure version and implementing additional security measures to prevent potential exploitation and protect their environments. The high CVSS score and potential impact of this vulnerability make it a high-priority issue that requires immediate attention and remediation to prevent potential data breaches and unauthorized access to sensitive information. Consequently, defenders should take swift action to mitigate the risk of exploitation and protect their environments by updating Feedbin to a secure version and implementing additional security measures to prevent potential exploitation and protect sensitive content. Given the severity and potential impact of this vulnerability, defenders should treat it as a high-priority issue and take necessary actions to protect their environments and prevent potential

Recommended defensive actions

• Update Feedbin to a secure version
• Review and restrict access to the entries text API endpoint
• Monitor for suspicious activity on the Feedbin instance
• Consider implementing additional security measures, such as authentication and authorization for API endpoints
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• 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

Evidence notes

The vulnerability was reported by Vulncheck and has been publicly disclosed. The CVE record was published on 2026-07-21T22:19:10.630Z and last modified on 2026-07-22T16:18:51.760Z. Evidence of the vulnerability's existence is limited to public sources, and defenders should verify the vulnerability's existence and scope within their environments. The vulnerability affects Feedbin (commit 739884a), and defenders should review the official advisory for affected scope and severity.

Official resources