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Description

A flaw has been found in MaxSite CMS up to 109.3. This vulnerability affects unknown code of the component down_count Plugin. This manipulation of the argument f_file/f_prefix causes cross site scripting. The attack may be initiated remotely. The exploit has been published and may be used. Upgrading to version 109.4 is able to resolve this issue. Patch name: 8a3946bd0a54bfb72a4d57179fcd253f2c550cd7. The affected component should be upgraded. The vendor was informed early about this issue. They classify it as a "Self-XSS". They deployed a countermeasure: "Nevertheless, we consider this a violation of secure coding standards. The lack of filtering via `htmlspecialchars()` has already been fixed in the latest patch to prevent incorrect data display."

PUBLISHED Reserved 2026-04-25 | Published 2026-04-26 | Updated 2026-04-27 | Assigner VulDB




MEDIUM: 4.8CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
LOW: 2.4CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
LOW: 2.4CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C
3.3AV:N/AC:L/Au:M/C:N/I:P/A:N/E:POC/RL:OF/RC:C

Problem types

Cross Site Scripting

Code Injection

Product status

109.0
affected

109.1
affected

109.2
affected

109.3
affected

109.4
unaffected

Timeline

2026-04-25:Advisory disclosed
2026-04-25:VulDB entry created
2026-04-25:VulDB entry last update

Credits

konchan (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/359594 (VDB-359594 | MaxSite CMS down_count Plugin cross site scripting) vdb-entry technical-description

vuldb.com/vuln/359594/cti (VDB-359594 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/796739 (Submit #796739 | MaxSite CMS 109.3 Cross Site Scripting) third-party-advisory

github.com/...d XSS-in-down_count-plugin-maxsite-cms.pdf.pdf exploit

github.com/...ommit/8a3946bd0a54bfb72a4d57179fcd253f2c550cd7 patch

github.com/maxsite/cms/releases/tag/v109 patch

github.com/maxsite/cms/ product

cve.org (CVE-2026-7014)

nvd.nist.gov (CVE-2026-7014)

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