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PatchSiren cyber security CVE debrief

CVE-2026-7807 SmarterTools Inc. CVE debrief

CVE-2026-7807 is a HIGH severity vulnerability in SmarterTools SmarterMail builds prior to 9560. The vulnerability allows authenticated users to read arbitrary .json files on the system via the /api/v1/report/summary/{type} API endpoint. This can be combined with weak encryption algorithms and hardcoded keys to decrypt and access stored passwords and 2FA secrets for all users. The CVSS score for this vulnerability is 8.7.

Vendor
SmarterTools Inc.
Product
SmarterMail
CVSS
HIGH 8.7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-08
Original CVE updated
2026-06-04
Advisory published
2026-05-08
Advisory updated
2026-06-04

Who should care

Administrators and users of SmarterTools SmarterMail builds prior to 9560 should be aware of this vulnerability and take steps to mitigate it.

Technical summary

The vulnerability is a local file inclusion vulnerability in the /api/v1/report/summary/{type} API endpoint of SmarterTools SmarterMail builds prior to 9560. This allows authenticated users to read arbitrary .json files on the system.

Defensive priority

HIGH

Recommended defensive actions

  • Upgrade to SmarterMail build 9560 or later.
  • Review and strengthen encryption algorithms and keys.
  • Monitor for suspicious activity.

Evidence notes

The vulnerability was reported by [email protected] and is referenced in the NVD and CVE records.

Official resources

CVE-2026-7807 was published on 2026-05-08T20:16:32.200Z and modified on 2026-06-04T15:37:22.120Z.