Reflected XSS in Seres Software's syWEB

Answer in brief

CVE-2026-11747 records a Unknown severity vulnerability in Reflected XSS in Seres Software's syWEB. The current sources do not mark it as known exploited. The current feed maps Seres Software/syWEB (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 27, 2026Updated Aug 27, 2026Source checked Aug 27, 2026First seen by HOL Aug 27, 2026Material review Aug 27, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. 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 Seres Software/syWEB (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Seres Software/syWEBgeneric	0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Seres Software/syWEB.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Aug 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 27, 2026

Sources and claim methodology

Source referencesiberguvenlik.gov.tr

Upstream source description

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Seres Software syWEB allows Reflected XSS. This issue affects syWEB: through 27082026. NOTE: The vendor was contacted and it was learned that the product is not supported.

Quoted source text, attributed separately from HOL analysis.