What is CVE-2026-11747?

CVE-2026-11747 is a medium-severity vulnerability in Seres Software Syweb, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-08-27.

How severe is CVE-2026-11747?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Seres Software Syweb

CVE-2026-11747

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.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Seres Software Syweb

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

iletisim@usom.gov.tr (government-resource)

Frequently asked questions

What is CVE-2026-11747?: CVE-2026-11747 is a medium-severity vulnerability in Seres Software Syweb, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-08-27.
How severe is CVE-2026-11747?: Medium severity. CVSS v3 base score is 6.1 out of 10.