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Vulnerabilities

Vulnerability · CVE-2026-40305

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem.

Published Apr 17, 2026 · catalog updated Jun 17, 2026 · DNN (formerly DotNetNuke) is

Check if you run it

No confirmed exploitation is on record for CVE-2026-40305. EPSS is 0.30%. Act only if a listed version of DNN (formerly DotNetNuke) is is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (DNN (formerly DotNetNuke) is).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.30%
Remediation
Advisory link
Affected products
cpe dnnsoftware/dotnetnuke

DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Starting in version 6.0.0 and prior to version 10.2.2, in the friends feature, a user could craft a request that would force the acceptance of a friend request on another user. Version 10.2.2 patches the issue.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe dnnsoftware/dotnetnukeversion unspecified

How to fix CVE-2026-40305

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-40305. EPSS is 0.30%. Act only if a listed version of DNN (formerly DotNetNuke) is is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-285: Improper Authorization. EPSS 0.30%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 17, 2026 · NIST NVD

    Detected

    DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Starting in version 6.0.0 and prior to version 10.2.2, in the friends feature, a user could craft a request that would force the acceptance of a friend request on another user. Version 10.2.2 patches the issue.

  2. Jun 17, 2026 · NIST NVD

    Updated

    DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Starting in version 6.0.0 and prior to version 10.2.2, in the friends feature, a user could craft a request that would force the acceptance of a friend request on another user. Version 10.2.2 patches the issue.

Sources

  • CVE.orgVulnerability recordCVE-2026-40305

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-40305

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-40305

    DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Starting in version 6.0.0 and prior to version 10.2.2, in the friends feature, a user could craft a request that would force the acceptance of a friend request on another

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.