CVE-2026-11747Network attack vector

Victim-browser script execution via undisclosed request input

Published Aug 27, 2026 · Updated Aug 27, 2026

Reflected XSS in syWEB through 27082026 allows remote attackers to execute script in a victim's browser through a crafted request. The published record does not identify the affected page or parameter, or the output operation that fails to neutralize input. Exploitation requires a victim to follow the attacker-controlled request; resulting script runs in the syWEB origin and can read or alter browser-accessible session data.

CVSS severity6.1
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in syWEB through 27082026 allows remote attackers to execute script in a victim's browser through a crafted request. The published record does not identify the affected page or parameter, or the output operation that fails to neutralize input. Exploitation requires a victim to follow the attacker-controlled request; resulting script runs in the syWEB origin and can read or alter browser-accessible session data.

The record

CVE
CVE-2026-11747
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
SYRIS Technology Corp.
Product
syWEB
Classifications
CWE-79, CAPEC-591, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=27082026

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SYRIS Technology Corp. · syWEBversion=0 <=27082026

Published CVSS scores

6.1TR-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-591Reflected XSS
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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