{"id":"CVE-2026-16648","kind":"vulnerability","aliases":["CVE-2026-16648"],"related":[],"title":"Drupal Mailer Plus Log: sensitive data written to log file","description":"Insertion of Sensitive Information into Log File vulnerability in Drupal Mailer Plus Log allows Remote Services with Stolen Credentials. This issue affects Mailer Plus Log versions: from 0.0.0 to 1.2.7.","summary":"The Drupal Mailer Plus Log module writes sensitive information into its log file. An attacker who already holds stolen credentials for remote services could read that data from the logs.","severity":"low","cvss":3.8,"epss":0.00196,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["drupal","other","php","self-hosted"],"not_affected_if":["module-not-installed"],"how_to_check":"- Check the installed Mailer Plus Log version with `drush pm:list --filter=mailer_plus_log` or in composer.lock for `drupal/mailer_plus_log`\n- unknown","fix":"- Upgrade Mailer Plus Log to a version later than `1.2.7` (the sources list 1.2.7 as affected; the fixed version is unknown)\n- Rotate any credentials that may have been written to logs","status":"open","published_at":"2026-10-22T02:17:01+00:00","first_seen_at":"2026-10-23T21:57:30+00:00","triaged_at":"2026-10-25T04:43:14+00:00","updated_at":"2026-10-25T04:43:14+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-10-25T04:43:14Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade Mailer Plus Log to a version later than `1.2.7` (the sources list 1.2.7 as affected; the fixed version is unknown)\n- Rotate any credentials that may have been written to logs","reach":"unknown","title":"Drupal Mailer Plus Log: sensitive data written to log file","impact":"low","summary":"The Drupal Mailer Plus Log module writes sensitive information into its log file. An attacker who already holds stolen credentials for remote services could read that data from the logs.","category":"other","nicknames":[],"who_cares":["drupal","php","self-hosted"],"confidence":0.5,"needs_auth":"yes","worst_case":"Sensitive data in logs is readable by whoever can open the log file","analyst_note":"","how_to_check":"- Check the installed Mailer Plus Log version with `drush pm:list --filter=mailer_plus_log` or in composer.lock for `drupal/mailer_plus_log`\n- unknown","needs_analyst":false,"not_affected_if":["module-not-installed"],"who_is_affected":"Sites running the Drupal Mailer Plus Log module at version 1.2.7 or earlier. The exposure is the log file itself, so review who can read the server logs. Sites without this module can skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"low"},"cost_usd":0.000573,"input_tokens":3348,"output_tokens":477,"severity_before":"low"},"analyst_status":null,"analyst_note":null,"search":"'-16648':13A,16A '-2026':12A,15A '0.0.0':80C '1.2.7':82C 'affect':74C 'allow':66C 'alreadi':39B 'attack':37B 'could':46B 'credenti':42B,71C 'cve':11A,14A 'data':6A,49B 'drupal':1A,17B,24B,62C 'file':10A,35B,59C 'hold':40B 'host':22B 'inform':31B,56C 'insert':53C 'issu':73C 'log':4A,9A,27B,34B,52B,58C,65C,77C 'mailer':2A,25B,63C,75C 'modul':28B 'php':19B 'plus':3A,26B,64C,76C 'read':47B 'remot':44B,67C 'self':21B 'self-host':20B 'sensit':5A,30B,55C 'servic':45B,68C 'stolen':41B,70C 'version':78C 'vulner':60C 'write':29B 'written':7A","nicknames":[],"mitigations":[],"who_affected":"Sites running the Drupal Mailer Plus Log module at version 1.2.7 or earlier. The exposure is the log file itself, so review who can read the server logs. Sites without this module can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-22T02:17:01+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","cvss_by":"134c704f-9b21-4f2e-91b3-4a467353bcc0","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-16648","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16648","severity":null,"published_at":"2026-10-22T02:17:01+00:00","modified_at":"2026-10-22T18:17:28+00:00","first_seen_at":"2026-10-23T21:57:30+00:00","fetched_at":"2026-10-23T22:29:02+00:00","note":null},{"source":"epss","external_id":"CVE-2026-16648","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-16648","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-24T07:15:52+00:00","fetched_at":"2026-10-24T07:15:52+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}