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No exploitation reportedAwaiting NVD analysis

CVE-2026-26248

No exploitation reported by the sources we read.

  • Published2026-11-10
  • WeaknessCWE-79

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8, FortiSandbox Cloud 5.0.4 through 5.0.5, FortiSandbox PaaS 5.0.4 through 5.0.5 may allow an unauthenticated attacker to perform an XSS attack via social engineering and crafted HTTP requests.

Timeline

dates in UTC
  1. 2026-11-1020:10CVE publishedCNA

Versions per branch

Products declared by the CNA

As fortinet, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • Fortinet FortiSandboxother versions: not affected
    Affected
    • ≥ 5.0.0, ≤ 5.0.5no fix statedsemver
    • ≥ 4.4.0, ≤ 4.4.8no fix statedsemver
    • ≥ 4.2.1, ≤ 4.2.8no fix statedsemver
  • Fortinet FortiSandbox Cloudother versions: not affected
    Affected
    • ≥ 5.0.4, ≤ 5.0.5no fix statedsemver
  • Fortinet FortiSandbox PaaSother versions: not affected
    Affected
    • ≥ 5.0.4, ≤ 5.0.5no fix statedsemver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-10

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-26248 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.17.92026-11-10
  • CNAweakness (CWE)CWE-792026-11-10
  • NVDweakness (CWE)CWE-79read 2026-11-10

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2026-11-10
Last Modified
2026-11-10
NVD status
Received

Frequently asked questions

What is CVE-2026-26248?

A improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8, FortiSandbox Cloud 5.0.4 through 5.0.5, FortiSandbox PaaS 5.0.4 through 5.0.5 may allow an unauthenticated attacker to perform an XSS attack via social engineering and crafted HTTP requests.

Is CVE-2026-26248 actively exploited?

Active exploitation of CVE-2026-26248 has not been confirmed.

What is the CVSS score for CVE-2026-26248?

CVE-2026-26248 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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