How severe is CVE-2018-9126?

CVE-2018-9126 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-9126 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 50% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-9126?

CVE-2018-9126 affects Zldnn Dnnarticle. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-9126?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-9126 published?

CVE-2018-9126 was published on 2018-04-04 and last updated on 2026-06-17.

CVE-2018-9126

CVE-2018-9126 is a critical-severity vulnerability in Zldnn Dnnarticle with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 50% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-200.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 50% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Zldnn Dnnarticle
Published: 2018-04-04
Last modified: 2026-06-17

Description

The DNNArticle module 11 for DNN (formerly DotNetNuke) allows remote attackers to read the web.config file, and consequently discover database credentials, via the /GetCSS.ashx/?CP=%2fweb.config URI.

Frequently asked questions

What is CVE-2018-9126?: The DNNArticle module 11 for DNN (formerly DotNetNuke) allows remote attackers to read the web.config file, and consequently discover database credentials, via the /GetCSS.ashx/?CP=%2fweb.config URI.
How severe is CVE-2018-9126?: CVE-2018-9126 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-9126 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 50% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-9126?: CVE-2018-9126 affects Zldnn Dnnarticle. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-9126?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-9126 published?: CVE-2018-9126 was published on 2018-04-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:zldnn:dnnarticle:11:*:*:*:*:dnn:*:*

More vulnerabilities in Zldnn Dnnarticle

CVE-2013-5117 — High (CVSS 7.5): SQL injection vulnerability in the RSS page (DNNArticleRSS.aspx) in the ZLDNN DNNArticle module before 10.1 for…

All CVEs affecting Zldnn Dnnarticle →

Other CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities

CVE-2026-27604 — Critical (CVSS 10.0): FOSSBilling is a free, open-source billing and client management system. Starting in version 0.5.4 and prior to version…
CVE-2026-40965 — Critical (CVSS 10.0): Cloud Foundry UAA versions v76.12.0 through v78.12.0 are vulnerable to a private key exposure. The server contains a…
CVE-2026-42826 — Critical (CVSS 10.0): Exposure of sensitive information to an unauthorized actor in Azure DevOps allows an unauthorized attacker to disclose…
CVE-2025-29270 — Critical (CVSS 10.0): Incorrect access control in the realtime.cgi endpoint of Deep Sea Electronics devices DSE855 v1.1.0 to v1.1.26 allows…
CVE-2025-61481 — Critical (CVSS 10.0): An issue in MikroTik RouterOS v.7.14.2 and SwOS v.2.18 exposes the WebFig management interface over cleartext HTTP by…
CVE-2025-53624 — Critical (CVSS 10.0): The Docusaurus gists plugin adds a page to your Docusaurus instance, displaying all public gists of a GitHub user.…

Browse all CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities →