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CVE-2025-8573

Concrete CMS 9 through 9.4.2 is vulnerable to Stored XSS from Home Folder on Members Dashboard page

2.0 LowPublic exploitFix available

Concrete CMS versions 9 through 9.4.2 are vulnerable to Stored XSS from Home Folder on Members Dashboard page.  Version 8 was not affected. A rogue admin could set up a malicious folder containing XSS to which users could be directed upon login. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.0 with vector CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N. Thanks sealldev  (Noah Cooper) for reporting via HackerOne.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
High
User interaction
Passive

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
None

Exploit likelihood

0.51%Up 0.4 points since Aug 6, 2025
90%50%10%1%

What each source reports

CVE List Score used 2.0

Concrete CMS 9 through 9.4.2 is vulnerable to Stored XSS from Home Folder on Members Dashboard page

Concrete CMS versions 9 through 9.4.2 are vulnerable to Stored XSS from Home Folder on Members Dashboard page.  Version 8 was not affected. A rogue admin could set up a malicious folder containing XSS to which users could be directed upon login. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.0 with vector CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N. Thanks sealldev  (Noah Cooper) for reporting via HackerOne.

Record
CVE-2025-8573
CVSS 4.0
2.0 LowCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-20
Updated
2026-11-02
EUVDEUVD-2025-23659 2.0

Concrete CMS versions 9 through 9.4.2 are vulnerable to Stored XSS from Home Folder on Members Dashboard page.  Version 8 was not affected. A rogue admin could set up a malicious folder containing XSS to which users could be directed upon login. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.0 with vector CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N. Thanks sealldev  (Noah Cooper) for reporting via HackerOne.

Record
EUVD-2025-23659
CVSS 4.0
2.0 LowCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-c5xf-rmv4-j85h 2.0

Concrete CMS is vulnerable to Stored XSS from Home Folder on Members Dashboard page

Concrete CMS versions 9 through 9.4.2 are vulnerable to Stored XSS from Home Folder on Members Dashboard page.  Version 8 was not affected. A rogue admin could set up a malicious folder containing XSS to which users could be directed upon login.

Record
GHSA-c5xf-rmv4-j85h
CVSS 4.0
2.0 LowCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-20, CWE-79
Updated
2026-11-02
NVD 2.0

Concrete CMS versions 9 through 9.4.2 are vulnerable to Stored XSS from Home Folder on Members Dashboard page.  Version 8 was not affected. A rogue admin could set up a malicious folder containing XSS to which users could be directed upon login. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.0 with vector CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N. Thanks sealldev  (Noah Cooper) for reporting via HackerOne.

Record
CVE-2025-8573
CVSS 4.0
2.0 LowCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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-20, CWE-79
Updated
2026-11-02
OSV 2.0

Concrete CMS 9 through 9.4.2 is vulnerable to Stored XSS from Home Folder on Members Dashboard page

Concrete CMS versions 9 through 9.4.2 are vulnerable to Stored XSS from Home Folder on Members Dashboard page.  Version 8 was not affected. A rogue admin could set up a malicious folder containing XSS to which users could be directed upon login. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.0 with vector CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N. Thanks sealldev  (Noah Cooper) for reporting via HackerOne.

Record
CVE-2025-8573
CVSS 4.0
2.0 LowCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-20
Updated
2026-11-02
OSVGHSA-c5xf-rmv4-j85h 2.0

Concrete CMS is vulnerable to Stored XSS from Home Folder on Members Dashboard page

Concrete CMS versions 9 through 9.4.2 are vulnerable to Stored XSS from Home Folder on Members Dashboard page.  Version 8 was not affected. A rogue admin could set up a malicious folder containing XSS to which users could be directed upon login.

Record
GHSA-c5xf-rmv4-j85h
CVSS 4.0
2.0 LowCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-20, CWE-79
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
concrete5/concrete5
Packagist
 9.0.0RC1 up to 9.4.3
9.4.3
concrete5/concrete5
Packagist
 9.0.0RC1 up to 9.4.3, plus listed versions
9.0.09.0.0RC39.0.0RC49.0.19.0.2
Show 30 moreShow less
9.1.09.1.19.1.29.1.39.2.09.2.0RC29.2.19.2.29.2.39.2.49.2.59.2.69.2.79.2.89.2.99.3.09.3.19.3.29.3.39.3.49.3.59.3.69.3.79.3.89.3.99.4.09.4.0RC19.4.0RC29.4.19.4.2
9.4.3

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBConcrete CMS 9.4.3 - Stored XSS2025-09-16

History

History
RecordedChangedSources
first indexedCVE List, EUVD, Exploit-DB, GitHub Advisories, NVD, OSV

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

In short

CVE-2025-8573 is a low vulnerability (CVSS 2.0) in Concrete Cms Cms, published August 5, 2025. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.51%, the 43rd percentile. Fixed in concrete5/concrete5 9.4.3.

References

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