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VulnerabilityPublished Updated

CVE-2026-88416: MCMS · SQL Injection

Affects MCMSSource CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 24% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
GitHubMCMSpkg:github/MCMSOther threatsAffected
  • >=6.1.1 <=6.2.1
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until an official fix is available, restrict access to the custom model/form import feature and monitor for suspicious activity related to SQL injection attempts.

Description

MCMS versions 6.1.1 through 6.2.1 contain a critical SQL injection vulnerability in the custom model/form import feature. This vulnerability allows unauthenticated attackers to execute arbitrary SQL commands, potentially leading to full compromise of confidentiality, integrity, and availability of the affected system. The vulnerability has a CVSS score of 9.8, indicating critical severity. No patch or remediation information is currently provided.

References

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