{"id":"CVE-2023-6877","aliases":["EUVD-2023-59081","GHSA-3xp5-393r-g6q2"],"status":"published","title":"RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News \u0026 YouTube Video Feeds Aggregator \u003c= 4.3.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Error Message","description":"The RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News \u0026 YouTube Video Feeds Aggregator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode(s) in all versions up to, and including, 4.3.3 due to insufficient input sanitization and output escaping on the Content-Type field of error messages when retrieving an invalid RSS feed. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","severity":{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00349,"percentile":0.28772,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2024-04-07T01:55:15Z","modified":"2026-06-17T06:51:35Z","products":[{"vendor":"themeisle","product":"rss aggregator by feedzy – feed to post, autoblogging, news \u0026 youtube video feeds aggregator"},{"vendor":"themeisle","product":"rss_aggregator_by_feedzy"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/7d25e85f-28f7-4cc5-9856-25cc5aaf1418?source=cve","tags":["x_transferred","Vendor Advisory"]},{"url":"https://plugins.trac.wordpress.org/changeset/3012849/feedzy-rss-feeds","tags":["x_transferred","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-6877"},{"url":"https://github.com/advisories/GHSA-3xp5-393r-g6q2"}],"sources":{"cve":[{"id":"CVE-2023-6877","title":"RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News \u0026 YouTube Video Feeds Aggregator \u003c= 4.3.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Error Message","description":"The RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News \u0026 YouTube Video Feeds Aggregator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode(s) in all versions up to, and including, 4.3.3 due to insufficient input sanitization and output escaping on the Content-Type field of error messages when retrieving an invalid RSS feed. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","status":"published","published":"2024-04-07T01:55:15.228Z","modified":"2026-04-08T17:02:50.248Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:35:25.095989Z"}],"euvd":[{"id":"EUVD-2023-59081","description":"The RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News \u0026 YouTube Video Feeds Aggregator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode(s) in all versions up to, and including, 4.3.3 due to insufficient input sanitization and output escaping on the Content-Type field of error messages when retrieving an invalid RSS feed. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","status":"published","published":"2024-04-07T01:55:15Z","modified":"2026-04-08T17:02:50Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:24:52.430714Z"}],"ghsa":[{"id":"GHSA-3xp5-393r-g6q2","title":"The RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News \u0026 YouTube Video Feeds Aggregator...","description":"The RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News \u0026 YouTube Video Feeds Aggregator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode(s) in all versions up to, and including, 4.3.3 due to insufficient input sanitization and output escaping on the Content-Type field of error messages when retrieving an invalid RSS feed. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","status":"published","published":"2024-04-07T03:30:45Z","modified":"2025-01-14T21:32:53Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:59:31.794566Z"}],"nvd":[{"id":"CVE-2023-6877","description":"The RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News \u0026 YouTube Video Feeds Aggregator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode(s) in all versions up to, and including, 4.3.3 due to insufficient input sanitization and output escaping on the Content-Type field of error messages when retrieving an invalid RSS feed. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","status":"published","published":"2024-04-07T02:15:07.45Z","modified":"2026-06-17T06:51:35.907Z","cvss":[{"version":"3.1","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:09:11.362739Z"}]}}