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  4. CVE 2026 111658 siteserver sscms through 740 cross site
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Back to active CVEs
Medium · CVSS 5.1CVE-2026-111658

SiteServer SSCMS through 7.4.0 Cross-Site Authorization Bypass via Channels APICVE-2026-111658

Answer in brief

CVE-2026-111658 records a Medium severity (CVSS 5.1) vulnerability in SiteServer SSCMS through 7.4.0 Cross-Site Authorization Bypass via Channels API. The current sources do not mark it as known exploited. The current feed maps SiteServer/SSCMS (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 16, 2026Updated Oct 16, 2026Source checked Oct 16, 2026First seen by HOL Oct 16, 2026Material review Oct 16, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 5.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps SiteServer/SSCMS (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
SiteServer/SSCMSgeneric>=0 <=7.4.0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for SiteServer/SSCMS.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Oct 16, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 16, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 16, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencehackmd.io
  • Source referencevulncheck.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Shaiwz data-platform-open through commit efeacd3 IDOR in Datasource APIAlso CWE-639
  • HUIZHI ChargeOS cloud through 3.0.9 IDOR via hcp-mp Member and Order APIsAlso CWE-639
  • HUIZHI ChargeOS cloud through 3.0.9 Unpaid Wallet Credit via /pay/xcxRechargeAlso CWE-639
  • ChatOllama through commit 96c3ce5 IDOR Exposes Private Knowledge BasesAlso CWE-639
  • yshop-crm through 2.1.3 IDOR via CRM customer by-id endpointsAlso CWE-639
  • Fuint through commit 57ec018 IDOR via bookId in myBookDetailAlso CWE-639

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-639
Source
CVE List V5
Source checked
Oct 16, 2026
References
4 linked sources
Open source record