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VulnerabilityPublished

CVE-2026-111088: Stormshield Network Security · Cross-site Scripting

Affects Stormshield Network SecuritySource CVE Database V5

0

Not known to be exploited · CVSS 6.5 Medium.

Data as of 26 Oct 2026, 14:18 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
StormshieldStormshield Network SecurityAffected
  • >=4.3.0 <=4.3.44
  • >=4.8.0 <=4.8.19
  • >=5.0.0 <=5.0.9
  • >=5.1.0 <=5.1.3
Fixed in–

AI-suggested

Until a patch is available, consider restricting access to the VPN log monitoring screen to trusted users only to reduce exposure.

Description

CVE-2026-111088 is a stored cross-site scripting (XSS) vulnerability in the Stormshield Network Security product, specifically affecting the VPN log monitoring screen. The vulnerability allows improper neutralization of input during web page generation, potentially enabling an attacker with low privileges to inject malicious scripts. The CVSS 3.1 base score is 6.5, indicating a medium severity impact focused on confidentiality. No known exploits are reported in the wild, and no official patch or remediation details are provided in the input data.

References

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