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Back to active CVEs
Critical · CVSS 9.0CVE-2026-40541

CISA ADP VulnrichmentCVE-2026-40541

Answer in brief

CVE-2026-40541 records a Critical severity (CVSS 9.0) vulnerability in CISA ADP Vulnrichment. The current sources do not mark it as known exploited. The current feed maps Synology/Synology Chat Server (generic), Synology/Synology Chat Server (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 Aug 28, 2026Updated Sep 1, 2026Source checked Oct 13, 2026First seen by HOL Aug 28, 2026Material review Sep 1, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.0
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 9.0. 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 Synology/Synology Chat Server (generic), Synology/Synology Chat Server (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Synology/Synology Chat Servergeneric>=* <2.4.5-221482.4.5-22148
Synology/Synology Chat Servergeneric*Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Synology/Synology Chat Server, Synology/Synology Chat Server.
  2. 2Review the reported fix. Update Synology/Synology Chat Server to 2.4.5-22148 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 28, 2026

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

  2. Source modified

    Sep 1, 2026

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

  3. First seen by HOL

    Aug 28, 2026

Sources and claim methodology

  • Source referencesynology.com
Upstream source description

An improper neutralization of input during web page generation ('Cross-site Scripting') vulnerability in extract domain in Synology Chat Server before 2.4.5-22148 allows remote authenticated users, via a UI interaction, to read or write arbitrary files and conduct denial-of-service attacks in DSM.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Bit integrations <= 2.10.6 - Unauthenticated Stored Cross-Site Scripting via 'notification_content' Field via Public Bit Assist Webhook CallbackAlso CWE-79
  • AcyMailing <= 11.1.0 - Unauthenticated Stored Cross-Site Scripting via 'customField[]' ParameterAlso CWE-79
  • WordPress Responsive Slider plugin <= 0.1.9 - Cross Site Scripting (XSS) vulnerabilityAlso CWE-79
  • WordPress FV Simpler SEO plugin <= 1.9.7 - Cross Site Scripting (XSS) vulnerabilityAlso CWE-79
  • WordPress IMPress for IDX Broker plugin <= 3.3.1 - Cross Site Scripting (XSS) vulnerabilityAlso CWE-79
  • WordPress Weaver Xtreme theme Support plugin <= 7.0.1 - Cross Site Scripting (XSS) vulnerabilityAlso CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 13, 2026
References
1 linked source
Open source record