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CVE-2026-111088— Stored XSS in the VPN logs monitor

Quick assessment

Affected
Stormshield Stormshield Network Security
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 SNS VPN 日志监控页面中存在一个存储型跨站脚本（Stored XSS）漏洞。

CVSS 6.5 · Medium

Affected Version Matrix 8

VendorProduct Version RangeStatus
Stormshield Stormshield Network Security 4.3.0≤ 4.3.44 affected
4.8.0≤ 4.8.19 affected
5.0.0≤ 5.0.9 affected
5.1.0≤ 5.1.3 affected
4.3.45 QS unaffected
4.8.20 LTSB unaffected
5.0.10 unaffected
5.1.4 EA unaffected
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I. Basic Information for CVE-2026-111088

Vulnerability Information
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Vulnerability Title
Stored XSS in the VPN logs monitor
Source: CVE Program / CVE List V5
Vulnerability Description
A Stored Cross-Site Scripting vulnerability exists in the SNS VPN log monitoring screen.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Stormshield Stormshield Network Security 4.3.0 ~ 4.3.44 -

II. Public POCs for CVE-2026-111088

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III. Intelligence Information for CVE-2026-111088

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Other References for CVE-2026-111088 (1)

Same Patch Batch · Stormshield · 2026-10-20 · 6 CVEs total

CVE-2026-111090 7.8 HIGH Improper Signature Verification of Firmware Update Files
CVE-2026-113469 7.5 HIGH Improper Signature Verification of Active Update Files
CVE-2026-113808 7.1 HIGH Stored XSS on SNS Enrollment Portal
CVE-2026-113810 7.0 HIGH Stored XSS on SNS Enrollment Portal
CVE-2026-113465 6.6 MEDIUM Possible DOM XSS in SNS Web Administration Portal

IV. Related Vulnerabilities

Same product: Stormshield Network Security
Same vendor: Stormshield
Same weakness: CWE-79

V. Comments for CVE-2026-111088

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