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CVE-2026-125437VulnerabilityPublished

NSquared Simply Schedule Appointments simply-schedule-appointments · Missing Authorization Vulnerability

Source GCVE Database

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Authoritative record:CVE-2026-125437· Medium 5.3

Not known to be exploited · CVSS 5.3 Medium : upgrade to 1.6.13.4 when convenient.

Data as of 11 Nov 2026, 13:33 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Patchstack)CVSS 3.15.3
Patch
Available – fixed in 1.6.13.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 11 Nov 2026.

What to do

Upgrade Simply Schedule Appointments to 1.6.13.4.

Affected software

ProductAffectedFixed in
Simply Schedule Appointmentssimply-schedule-appointmentsAffected
  • <1.6.13.4
Fixed in
  • 1.6.13.4

AI-suggested

If you cannot patch yet, review and tighten access control configurations to ensure proper authorization enforcement. Avoid exposing vulnerable versions to untrusted networks if possible.

Description

A missing authorization vulnerability exists in NSquared Simply Schedule Appointments up to version 1.6.13.0. This flaw involves incorrectly configured access control security levels, potentially allowing unauthorized access to certain functions or data. The vulnerability has a medium severity rating with a CVSS score of 5.3, indicating limited confidentiality impact without integrity or availability effects.

References

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