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CVE-2024-3179

Concrete CMS version 9 before 9.2.8 and previous versions before 8.5.16 are vulnerable to Stored XSS in the Custom Class page

3.1 LowFix available

Concrete CMS version 9 before 9.2.8 and previous versions before 8.5.16 are vulnerable to Stored XSS in the Custom Class page editing. Prior to the fix, a rogue administrator could insert malicious code in the custom class field due to insufficient validation of administrator provided data. The Concrete CMS security team gave this vulnerability a CVSS v3.1 score of 3.1 with a vector of AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator . Thanks Alexey Solovyev for reporting.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
High
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
Low
Availability
Low

Exploit likelihood

0.36%Up 0.3 points since Apr 4, 2024
90%50%10%1%

What each source reports

CVE List Score used 3.1

Concrete CMS version 9 before 9.2.8 and previous versions before 8.5.16 are vulnerable to Stored XSS in the Custom Class page

Concrete CMS version 9 before 9.2.8 and previous versions before 8.5.16 are vulnerable to Stored XSS in the Custom Class page editing. Prior to the fix, a rogue administrator could insert malicious code in the custom class field due to insufficient validation of administrator provided data. The Concrete CMS security team gave this vulnerability a CVSS v3.1 score of 3.1 with a vector of AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator . Thanks Alexey Solovyev for reporting.

Record
CVE-2024-3179
CVSS 3.1
3.1 LowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L
Weakness
CWE-79
Updated
2026-11-02
EUVDEUVD-2024-1295 3.1

Concrete CMS version 9 before 9.2.8 and previous versions before 8.5.16 are vulnerable to Stored XSS in the Custom Class page editing. Prior to the fix, a rogue administrator could insert malicious code in the custom class field due to insufficient validation of administrator provided data. The Concrete CMS security team gave this vulnerability a CVSS v3.1 score of 3.1 with a vector of AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator . Thanks Alexey Solovyev for reporting.

Record
EUVD-2024-1295
CVSS 3.1
3.1 LowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L
Updated
2026-11-03
GitHub AdvisoriesGHSA-r7q4-cw9r-vhp4 3.1

Concrete CMS Stored XSS in the Custom Class page editing

Concrete CMS version 9 before 9.2.8 and previous versions before 8.5.16 are vulnerable to Stored XSS in the Custom Class page editing. Prior to the fix, a rogue administrator could insert malicious code in the custom class field due to insufficient validation of administrator provided data. The Concrete CMS security team gave this vulnerability a CVSS v3.1 score of 3.1 with a vector of AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator . Thanks Alexey Solovyev for reporting. 

Record
GHSA-r7q4-cw9r-vhp4
CVSS 3.1
3.1 LowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L
Weakness
CWE-20, CWE-79
Updated
2026-11-02
NVD 3.1

Concrete CMS version 9 before 9.2.8 and previous versions before 8.5.16 are vulnerable to Stored XSS in the Custom Class page editing. Prior to the fix, a rogue administrator could insert malicious code in the custom class field due to insufficient validation of administrator provided data. The Concrete CMS security team gave this vulnerability a CVSS v3.1 score of 3.1 with a vector of AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator . Thanks Alexey Solovyev for reporting.

Record
CVE-2024-3179
CVSS 3.1
3.1 LowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L
CVSS 3.1
4.8 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSV 3.1

Concrete CMS version 9 before 9.2.8 and previous versions before 8.5.16 are vulnerable to Stored XSS in the Custom Class page

Concrete CMS version 9 before 9.2.8 and previous versions before 8.5.16 are vulnerable to Stored XSS in the Custom Class page editing. Prior to the fix, a rogue administrator could insert malicious code in the custom class field due to insufficient validation of administrator provided data. The Concrete CMS security team gave this vulnerability a CVSS v3.1 score of 3.1 with a vector of AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator . Thanks Alexey Solovyev for reporting.

Record
CVE-2024-3179
CVSS 3.1
3.1 LowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L
Weakness
CWE-79
Updated
2026-11-02
OSVGHSA-r7q4-cw9r-vhp4 3.1

Concrete CMS Stored XSS in the Custom Class page editing

Concrete CMS version 9 before 9.2.8 and previous versions before 8.5.16 are vulnerable to Stored XSS in the Custom Class page editing. Prior to the fix, a rogue administrator could insert malicious code in the custom class field due to insufficient validation of administrator provided data. The Concrete CMS security team gave this vulnerability a CVSS v3.1 score of 3.1 with a vector of AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator . Thanks Alexey Solovyev for reporting. 

Record
GHSA-r7q4-cw9r-vhp4
CVSS 3.1
3.1 LowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L
Weakness
CWE-20, CWE-79
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
concrete5/concrete5
Packagist
9.0.0RC1 up to 9.2.8
9.2.8
concrete5/concrete5
Packagist
before 8.5.16
8.5.16
concrete5/concrete5
Packagist
9.0.0RC1 up to 9.2.8, plus listed versions
9.0.09.0.0RC39.0.0RC49.0.19.0.2
Show 13 moreShow less
9.1.09.1.19.1.29.1.39.2.09.2.0RC29.2.19.2.29.2.39.2.49.2.59.2.69.2.7
9.2.8
concrete5/concrete5
Packagist
before 8.5.16, plus listed versions
8.08.0.18.0.28.0.38.1.0
Show 33 moreShow less
8.2.08.2.0RC28.2.18.3.08.3.18.3.28.4.08.4.0RC38.4.0RC48.4.18.4.28.4.38.4.48.4.58.5.08.5.0RC18.5.0RC28.5.18.5.108.5.118.5.128.5.138.5.148.5.158.5.28.5.38.5.48.5.58.5.68.5.6RC18.5.78.5.88.5.9
8.5.16

History

History
RecordedChangedSources
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2024-3179 is a low vulnerability (CVSS 3.1) in Concrete Cms Cms, published April 3, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 29th percentile. Fixed in concrete5/concrete5 9.2.8.

References

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