How severe is CVE-2018-20028?

CVE-2018-20028 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-20028 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20028?

CVE-2018-20028 affects Contao Contao Cms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-20028?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-20028 published?

CVE-2018-20028 was published on 2019-04-17 and last updated on 2026-06-17.

CVE-2018-20028

CVE-2018-20028 is a medium-severity vulnerability in Contao Contao Cms with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Contao Contao Cms
Published: 2019-04-17
Last modified: 2026-06-17

Description

Contao 3.x before 3.5.37, 4.4.x before 4.4.31 and 4.6.x before 4.6.11 has Incorrect Access Control.

Frequently asked questions

What is CVE-2018-20028?: Contao 3.x before 3.5.37, 4.4.x before 4.4.31 and 4.6.x before 4.6.11 has Incorrect Access Control.
How severe is CVE-2018-20028?: CVE-2018-20028 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2018-20028 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20028?: CVE-2018-20028 affects Contao Contao Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-20028?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-20028 published?: CVE-2018-20028 was published on 2019-04-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:contao:contao_cms:*:*:*:*:*:*:*:*

More vulnerabilities in Contao Contao Cms

CVE-2014-1860 — Critical (CVSS 9.8): Contao CMS through 3.2.4 has PHP Object Injection Vulnerabilities
CVE-2017-16558 — Critical (CVSS 9.8): Contao 3.0.0 to 3.5.30 and 4.0.0 to 4.4.7 contains an SQL injection vulnerability in the back end as well as in the…
CVE-2019-10643 — Critical (CVSS 9.8): Contao 4.7 allows Use of a Key Past its Expiration Date.
CVE-2019-10641 — Critical (CVSS 9.8): Contao before 3.5.39 and 4.x before 4.7.3 has a Weak Password Recovery Mechanism for a Forgotten Password.
CVE-2019-10642 — High (CVSS 8.8): Contao 4.7 allows CSRF.
CVE-2017-10993 — High (CVSS 8.8): Contao before 3.5.28 and 4.x before 4.4.1 allows remote attackers to include and execute arbitrary local PHP files via…

All CVEs affecting Contao Contao Cms →