CVE-2026-126968VulnerabilityPublished 13 Nov 2026

ZDI-26-996: SmarterTools SmarterMail Missing Authorization Information Disclosure Vulnerability

Source Zero Day Initiative

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Not known to be exploited.

Data as of 13 Nov 2026, 22:19 UTC

Severity

Medium

Rated Medium by Zero Day Initiative · CVSS not yet scored by NVD

Exploitation evidence

Disclosed: evidence found.
Public on cve.org; its publication date is not in this record
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

AI-suggested

Since authentication is required for exploitation, ensuring strong access controls and monitoring authenticated sessions may reduce risk. Check vendor advisories for updates or official fixes as they become available.

Description

A vulnerability in SmarterTools SmarterMail allows remote authenticated attackers to disclose sensitive information. Exploitation requires authentication. The vulnerability has a medium severity rating with a CVSS score of 6.5 assigned by ZDI. No specific affected versions or patches are provided in the available data.

Impact

Successful exploitation allows remote attackers with valid authentication to disclose sensitive information from the SmarterMail installation. This could lead to exposure of confidential data depending on the environment and data stored. There is no indication of exploitation in the wild or public exploit code at this time.

Summary

The SmarterTools SmarterMail product contains an information disclosure vulnerability that can be exploited remotely by authenticated users. This flaw permits attackers to access sensitive information on affected installations. The vulnerability is tracked as CVE-2026-126968 and has been assigned a CVSS rating of 6.5 by the Zero Day Initiative. No technical details or affected versions are specified in the provided information.

References

zerodayinitiative.com/advisories/ZDI-26-996/ (opens in a new tab)

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