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CVE-2018-20028

Contao Information Disclosure via Access Control Flaws

6.5 MediumFix available

CVE-2018-20028 is a medium vulnerability (CVSS 6.5) in Contao Cms, published April 17, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.91%, the 60th percentile. Fixed in contao/contao 3.5.37.

What does this mean?
Severity
6.5 MediumCVSS 3.0, NVD
Exploit chance
0.91%EPSS, 60th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
3.5.37contao/contao +4 more

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

0.91%Up 0.3 points since Apr 14, 2021
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
contao/contao
Packagist
3.0.0 up to 3.5.37
3.5.37
contao/contao
Packagist
4.6.0 up to 4.6.11
4.6.11
contao/contao
Packagist
4.4.0 up to 4.4.31
4.4.31
contao/contao
Packagist
4.6.0 up to 4.6.11, plus listed versions
4.6.14.6.104.6.24.6.34.6.4
Show 5 moreShow less
4.6.54.6.64.6.74.6.84.6.9
4.6.11
contao/contao
Packagist
4.4.0 up to 4.4.31, plus listed versions
4.4.224.4.234.4.244.4.254.4.26
Show 4 moreShow less
4.4.274.4.284.4.294.4.30
4.4.31

What each source reports

NVD Score used6.5

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.

Record
CVE-2018-20028
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0
4.0 MediumAV:N/AC:L/Au:S/C:P/I:N/A:N
Updated
2026-11-02
CVE ListNo score

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.

Record
CVE-2018-20028
Updated
2026-11-02
EUVDEUVD-2022-4927No score

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.

Record
EUVD-2022-4927
Updated
2026-11-03
GitHub AdvisoriesGHSA-q99w-j4mj-7hj86.5

Contao Information Disclosure via Access Control Flaws

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.

Record
GHSA-q99w-j4mj-7hj8
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-284
Updated
2026-11-02
OSV6.5

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.

Record
CVE-2018-20028
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVGHSA-q99w-j4mj-7hj86.5

Contao Information Disclosure via Access Control Flaws

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.

Record
GHSA-q99w-j4mj-7hj8
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-284
Updated
2026-11-02

History

History
RecordedChangedSources
facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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