CVE-2026-111658 — SiteServer SSCMS through 7.4.0 Cross-Site Authorization Bypass via Channels API
SiteServer SSCMS through 7.4.0 contains an authorization bypass vulnerability in ChannelsController that allows site-scoped administrators to access other sites' channels by sup…
Published: 2026-10-16 · CVSS: 5.1 · CVSS 4.0
SiteServer SSCMS through 7.4.0 contains an authorization bypass vulnerability in ChannelsController that allows site-scoped administrators to access other sites' channels by supplying foreign channel IDs. Attackers with Channels permission on one site can read and overwrite another site's channel names, file paths, templates, link URLs, and custom fields, breaking multi-site isolation.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7