CVE-2026-26248 (GCVE-0-2026-26248)
Vulnerability from cvelistv5 – Published: 2026-11-10 20:10 – Updated: 2026-11-11 03:55
VLAI
EPSS
VEX
Summary
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 4.2 all versions, 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.
Severity
CWE
- CWE-79 - Execute unauthorized code or commands
Assigner
fortinet
CNA
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Fortinet | FortiSandbox |
Affected:
5.0.0 , ≤ 5.0.5
(semver)
Affected: 4.4.0 , ≤ 4.4.8 (semver) Affected: 4.2.1 , ≤ 4.2.8 (semver) cpe:2.3:a:fortinet:fortisandbox:5.0.5:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:5.0.4:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:5.0.3:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:5.0.2:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:5.0.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:5.0.0:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.4.8:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.4.7:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.4.6:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.4.5:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.4.4:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.4.3:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.4.2:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.4.1:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.4.0:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.2.8:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.2.7:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.2.6:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.2.5:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.2.4:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.2.3:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.2.2:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandbox:4.2.1:*:*:*:*:*:*:* |
|
| Fortinet | FortiSandbox Cloud |
Affected:
5.0.4 , ≤ 5.0.5
(semver)
cpe:2.3:a:fortinet:fortisandboxcloud:5.0.5:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandboxcloud:5.0.4:*:*:*:*:*:*:* |
|
| Fortinet | FortiSandbox PaaS |
Affected:
5.0.4 , ≤ 5.0.5
(semver)
cpe:2.3:a:fortinet:fortisandboxpaas:5.0.5:*:*:*:*:*:*:* cpe:2.3:a:fortinet:fortisandboxpaas:5.0.4:*:*:*:*:*:*:* |
{
"containers": {
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:fortinet:fortisandbox:5.0.5:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:5.0.4:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:5.0.3:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:5.0.2:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:5.0.1:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:5.0.0:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.4.8:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.4.7:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.4.6:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.4.5:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.4.4:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.4.3:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.4.2:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.4.1:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.4.0:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.2.8:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.2.7:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.2.6:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.2.5:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.2.4:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.2.3:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.2.2:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandbox:4.2.1:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"product": "FortiSandbox",
"vendor": "Fortinet",
"versions": [
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"status": "affected",
"version": "5.0.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.4.8",
"status": "affected",
"version": "4.4.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.2.8",
"status": "affected",
"version": "4.2.1",
"versionType": "semver"
}
]
},
{
"cpes": [
"cpe:2.3:a:fortinet:fortisandboxcloud:5.0.5:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandboxcloud:5.0.4:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"product": "FortiSandbox Cloud",
"vendor": "Fortinet",
"versions": [
{
"lessThanOrEqual": "5.0.5",
"status": "affected",
"version": "5.0.4",
"versionType": "semver"
}
]
},
{
"cpes": [
"cpe:2.3:a:fortinet:fortisandboxpaas:5.0.5:*:*:*:*:*:*:*",
"cpe:2.3:a:fortinet:fortisandboxpaas:5.0.4:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"product": "FortiSandbox PaaS",
"vendor": "Fortinet",
"versions": [
{
"lessThanOrEqual": "5.0.5",
"status": "affected",
"version": "5.0.4",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A improper neutralization of input during web page generation (\u0027cross-site scripting\u0027) vulnerability in Fortinet FortiSandbox 5.0.0 through 5.0.5, FortiSandbox 4.4.0 through 4.4.8, FortiSandbox 4.2 all versions, 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."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.9,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "Execute unauthorized code or commands",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-11-11T03:55:44.333Z",
"orgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
"shortName": "fortinet"
},
"references": [
{
"name": "https://fortiguard.fortinet.com/psirt/FG-IR-26-142",
"url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-142"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to FortiSandbox version 5.2.0 or above\nUpgrade to FortiSandbox version 5.0.6 or above\nUpgrade to FortiSandbox version 4.4.9 or above\nUpgrade to FortiSandbox PaaS version 5.2.0 or above\nUpgrade to FortiSandbox PaaS version 5.0.6 or above\nUpgrade to FortiSandbox Cloud version 5.0.6 or above"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "6abe59d8-c742-4dff-8ce8-9b0ca1073da8",
"assignerShortName": "fortinet",
"cveId": "CVE-2026-26248",
"datePublished": "2026-11-10T20:10:39.645Z",
"dateReserved": "2026-02-12T12:07:02.132Z",
"dateUpdated": "2026-11-11T03:55:44.333Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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