Which products and versions are affected by CVE-2018-18326?

Affected: Dotnetnuke (Dnnsoftware); DotNetNuke.Core (nuget). The full list is in the CVE brief.

Is CVE-2018-18326 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2018-18326 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2018-18326?

Public exploit code is available.

Is there a fix for CVE-2018-18326?

Fixed versions are available, including Dotnetnuke <=9.2.2, DotNetNuke.Core 9.3.0, Dotnetnuke 9.2.2.

How urgently should CVE-2018-18326 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2018-18326

Q: What is CVE-2018-18326?

DNN (aka DotNetNuke) 9.2 through 9.2.2 incorrectly converts encryption key source values, resulting in lower than expected entropy.

Q: How urgently should CVE-2018-18326 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

HighPublic exploit

Insufficient Entropy in DotNetNuke

Published Jul 5, 2019 · Updated Jul 8, 2026 · Also known as GHSA-xx3h-j3cx-8qfj

Key Facts

Patch immediately

CVE-2018-18326 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Dotnetnuke (Dnnsoftware), DotNetNuke.Core (nuget).
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 54% probability of exploitation in the next 30 days.
Fixed versions are available, including Dotnetnuke <=9.2.2, DotNetNuke.Core 9.3.0, Dotnetnuke 9.2.2.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS (30-day exploit likelihood)

54%

Higher than 99.0% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2018-18326 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

DNN (aka DotNetNuke) 9.2 through 9.2.2 incorrectly converts encryption key source values, resulting in lower than expected entropy. NOTE: this issue exists because of an incomplete fix for CVE-2018-15812.

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
DotnetnukeDnnsoftware	See advisory	9.2.2
DotNetNuke.Corenuget	See advisory	9.3.0

Patched Releases

Dotnetnuke

<=9.2.2

DotNetNuke.Core

9.3.0

Timeline

Publicly disclosed
Jul 5, 2019
Last updated
Jul 8, 2026

Weakness Type

CWE-331 Insufficient Entropy

References

advisoryGHSA advisory
advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2018-18326
exploitMSF dnn_cookie_deserialization_rce.rb
exploitExploitDB-48336
articlehttp://packetstormsecurity.com/files/157080/DotNetNuke-Cookie-Deserialization-Remote-Code-Execution.html

2 more references in the full CVE brief

FAQ

Common Questions.

DNN (aka DotNetNuke) 9.2 through 9.2.2 incorrectly converts encryption key source values, resulting in lower than expected entropy.
Affected: Dotnetnuke (Dnnsoftware); DotNetNuke.Core (nuget). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Dotnetnuke <=9.2.2, DotNetNuke.Core 9.3.0, Dotnetnuke 9.2.2.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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