{"id":"CVE-2026-87939","aliases":["DRUPAL-CONTRIB-2026-137","EUVD-2026-107862","GHSA-cw7v-hw53-2792"],"status":"published","title":"Feed Block - Moderately critical - Cross-site scripting - SA-CONTRIB-2026-137","description":"Improper Neutralization of Input During Web Page Generation (\"Cross-site Scripting\") vulnerability in Drupal Feed Block allows Stored XSS. This issue affects Feed Block versions: from 0.0.0 to 2.0.2, from 3.0.0 to 3.0.2.","severity":{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00198,"percentile":0.09592,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2026-09-09T17:16:58Z","modified":"2026-10-28T02:30:35Z","fixes":[{"ecosystem":"Packagist:https://packages.drupal.org/8","package":"drupal/feed_block","fixed_in":["2.0.2","3.0.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Packagist:https://packages.drupal.org/8","package":"drupal/feed_block","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.2"}]},{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.0.2"}]}]}],"products":[{"vendor":"drupal","product":"feed block"}],"references":[{"url":"https://www.drupal.org/sa-contrib-2026-137","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87939","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-cw7v-hw53-2792"},{"url":"https://git.drupalcode.org/project/feed_block","tags":["web"]},{"url":"https://www.drupal.org/project/feed_block","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87939.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-87939","title":"Feed Block - Moderately critical - Cross-site scripting - SA-CONTRIB-2026-137","description":"Improper Neutralization of Input During Web Page Generation (\"Cross-site Scripting\") vulnerability in Drupal Feed Block allows Stored XSS. This issue affects Feed Block versions: from 0.0.0 to 2.0.2, from 3.0.0 to 3.0.2.","status":"published","published":"2026-10-22T01:22:02.857Z","modified":"2026-10-22T17:27:21.567Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:37:47.463822Z"}],"euvd":[{"id":"EUVD-2026-107862","description":"Improper Neutralization of Input During Web Page Generation (\"Cross-site Scripting\") vulnerability in Drupal Feed Block allows Stored XSS. This issue affects Feed Block versions: from 0.0.0 to 2.0.2, from 3.0.0 to 3.0.2.","status":"published","published":"2026-10-22T01:22:02Z","modified":"2026-10-22T17:27:21Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T16:59:34.378575Z"}],"ghsa":[{"id":"GHSA-cw7v-hw53-2792","title":"Improper Neutralization of Input During Web Page Generation (\"Cross-site Scripting\")...","description":"Improper Neutralization of Input During Web Page Generation (\"Cross-site Scripting\") vulnerability in Drupal Feed Block allows Stored XSS. This issue affects Feed Block versions: from 0.0.0 to 2.0.2, from 3.0.0 to 3.0.2.","status":"published","published":"2026-10-22T03:33:39Z","modified":"2026-10-22T18:39:23Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:14:16.981825Z"}],"nvd":[{"id":"CVE-2026-87939","description":"Improper Neutralization of Input During Web Page Generation (\"Cross-site Scripting\") vulnerability in Drupal Feed Block allows Stored XSS. This issue affects Feed Block versions: from 0.0.0 to 2.0.2, from 3.0.0 to 3.0.2.","status":"published","published":"2026-10-22T02:17:03.387Z","modified":"2026-10-22T18:17:31.56Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:13:02.371082Z"}],"osv":[{"id":"CVE-2026-87939","title":"Feed Block - Moderately critical - Cross-site scripting - SA-CONTRIB-2026-137","description":"Improper Neutralization of Input During Web Page Generation (\"Cross-site Scripting\") vulnerability in Drupal Feed Block allows Stored XSS. This issue affects Feed Block versions: from 0.0.0 to 2.0.2, from 3.0.0 to 3.0.2.","status":"published","published":"2026-10-22T01:22:02.857Z","modified":"2026-10-28T02:30:35.987190947Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:45:19.210277Z"},{"id":"DRUPAL-CONTRIB-2026-137","description":"The Feed Block module provides a block content type that displays items pulled from a remote RSS/Atom feed.\n\nThe module does not sufficiently validate or sanitize the RSS feed it generates, resulting in a stored cross-site scripting (XSS) vulnerability.","status":"published","published":"2026-09-09T17:16:58Z","modified":"2026-09-09T19:25:58.393571Z","updated_at":"2026-11-02T15:46:13.900249Z"}]}}