CVE-2026-16648
Mailer Plus Log - Moderately critical - Access bypass - SA-CONTRIB-2026-128
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Mailer Plus Log - Moderately critical - Access bypass - SA-CONTRIB-2026-128
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.
- Record
CVE-2026-16648- CVSS 3.1
- 3.8 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-532
- Updated
- 2026-11-02
EUVDEUVD-2026-107871
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.
- Record
EUVD-2026-107871- CVSS 3.1
- 3.8 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-rff2-xmfh-r4qc
Insertion of Sensitive Information into Log File vulnerability in Drupal Mailer Plus Log allows...
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.
- Record
GHSA-rff2-xmfh-r4qc- CVSS 3.1
- 3.8 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-532
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-16648- CVSS 3.1
- 3.8 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-532
- Updated
- 2026-11-02
OSV
Mailer Plus Log - Moderately critical - Access bypass - SA-CONTRIB-2026-128
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.
- Record
CVE-2026-16648- CVSS 3.1
- 3.8 Low
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-532
- Updated
- 2026-11-02
OSVDRUPAL-CONTRIB-2026-128No score
This module enables you to log the emails sent by Mailer Plus as content entities, so they can be reviewed at Reports > Mail log.
The module doesn't sufficiently redact the content of the emails it logs. Account related emails are stored with their one-time login links intact, so any user who can view the log can obtain a one-time login link for any account, including user 1, and use it to log in as that account.
This vulnerability is mitigated by the fact that an attacker must have a role with the permission View Drupal Symfony Mailer log entries, which in earlier releases was not marked as a restricted permission.
- Record
DRUPAL-CONTRIB-2026-128- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
drupal/symfony_mailer_logPackagist:https://packages.drupal.org/8 | before 1.2.7 | 1.2.7 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-16648 is a low vulnerability (CVSS 3.8) in Drupal Mailer Plus Log, published September 2, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.25%, the 16th percentile. Fixed in drupal/symfony_mailer_log 1.2.7.