CVE-2018-18307

Public Exploit

Description

A Stored XSS vulnerability has been discovered in version 4.1.0 of AlchemyCMS via the /admin/pictures image field. NOTE: the vendor's position is that this is not a valid report: "The researcher used an authorized cookie to perform the request to a password-protected route. Without that session cookie, the request would have been rejected as unauthorized."

Category

6.1
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.41%
Third-Party Advisory packetstormsecurity.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://packetstormsecurity.com/files/149787/Alchemy-CMS-4.1-Stable-Cross-Site-Scripting.html exploit vdb entry third party advisory
https://github.com/AlchemyCMS/alchemy_cms/blob/4.1-stable/app/controllers/alchemy/admin/pictures_controller.rb#L5
https://github.com/AlchemyCMS/alchemy_cms/blob/4.1-stable/app/controllers/alchemy/admin/resources_controller.rb#L21
https://github.com/AlchemyCMS/alchemy_cms/blob/4.1-stable/app/controllers/alchemy/admin/base_controller.rb#L15

Frequently Asked Questions

What is the severity of CVE-2018-18307?
CVE-2018-18307 has been scored as a medium severity vulnerability.
How to fix CVE-2018-18307?
To fix CVE-2018-18307, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-18307 being actively exploited in the wild?
It is possible that CVE-2018-18307 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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