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TI-2021-09291 Aliases CVE-2021-27983GHSA-m6q6-5v8h-vp6v

Remote Code Execution (RCE) vulnerability exists in MaxSite CMS v107.5 via the Documents page.

Priority MEDIUM 48Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

Remote Code Execution (RCE) vulnerability exists in MaxSite CMS v107.5 via the Documents page.

Why it matters now

EPSS 0.03585 89th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:max-3000:maxsite_cms:107.5:*:*:*:*:*:*:*107.5VulnerableMax-3000
  • cpe:2.3:a:max-3000:maxsite_cms:107.5:*:*:*:*:*:*:* Versions 107.5 Vulnerable ·Max-3000

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-27983
  2. 2026-10-03 Alias added: GHSA-m6q6-5v8h-vp6v

References

Exploit 1

  • TI-2026-02931 MaxSite CMS MarkItUp Preview AJAX Endpoint preview-ajax.php eval code injection CVSS 4.0MEDIUM 6.9
  • TI-2025-11324 MaxSite CMS save-file-ajax.php unrestricted upload CVSS 4.0MEDIUM 5.3
  • TI-2022-09080 A Remote Code Execution (RCE) vulnerability at /admin/options in Maxsite CMS v180 allows… CVSS 3.1CRITICAL 9.8
  • TI-2022-09081 Maxsite CMS v180 was discovered to contain multiple arbitrary file deletion… CVSS 3.1HIGH 8.1
  • TI-2022-09082 Maxsite CMS v108 was discovered to contain a stored cross-site scripting (XSS)… CVSS 3.1MEDIUM 5.4
  • TI-2022-09079 Maxsite CMS v180 was discovered to contain a stored cross-site scripting (XSS)… CVSS 3.1MEDIUM 5.4
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences