CVE-2026-1009 (GCVE-0-2026-1009)
Vulnerability from cvelistv5
Published
2026-01-15 22:51
Modified
2026-01-20 20:15
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A stored cross-site scripting (XSS) vulnerability exists in the Altium Forum due to missing server-side input sanitization in forum post content. An authenticated attacker can inject arbitrary JavaScript into forum posts, which is stored and executed when other users view the affected post.
Successful exploitation allows the attacker’s payload to execute in the context of the victim’s authenticated Altium 365 session, enabling unauthorized access to workspace data, including design files and workspace settings. Exploitation requires user interaction to view a malicious forum post.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Altium | Altium Live |
Version: 0 ≤ 1.2.2 |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-1009",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-01-16T17:17:26.393184Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-01-16T17:17:45.223Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"modules": [
"Forum post editing and rendering"
],
"platforms": [
"Web"
],
"product": "Altium Live",
"vendor": "Altium",
"versions": [
{
"changes": [
{
"at": "1.2.3",
"status": "unaffected"
}
],
"lessThanOrEqual": "1.2.2",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"datePublic": "2026-01-15T22:48:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "A stored cross-site scripting (XSS) vulnerability exists in the Altium Forum due to missing server-side input sanitization in forum post content. An authenticated attacker can inject arbitrary JavaScript into forum posts, which is stored and executed when other users view the affected post.\u003cbr\u003eSuccessful exploitation allows the attacker\u2019s payload to execute in the context of the victim\u2019s authenticated Altium 365 session, enabling unauthorized access to workspace data, including design files and workspace settings. Exploitation requires user interaction to view a malicious forum post.\u003cbr\u003e"
}
],
"value": "A stored cross-site scripting (XSS) vulnerability exists in the Altium Forum due to missing server-side input sanitization in forum post content. An authenticated attacker can inject arbitrary JavaScript into forum posts, which is stored and executed when other users view the affected post.\nSuccessful exploitation allows the attacker\u2019s payload to execute in the context of the victim\u2019s authenticated Altium 365 session, enabling unauthorized access to workspace data, including design files and workspace settings. Exploitation requires user interaction to view a malicious forum post."
}
],
"impacts": [
{
"capecId": "CAPEC-63",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-63 Cross-Site Scripting"
}
]
},
{
"capecId": "CAPEC-122",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-122 Privilege Abuse"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79 Improper Neutralization of Input During Web Page Generation (Cross-site Scripting)",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-284",
"description": "CWE-284 Improper Access Control",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-01-20T20:15:28.251Z",
"orgId": "4760f414-e1ae-4ff1-bdad-c7a9c3538b79",
"shortName": "Altium"
},
"references": [
{
"url": "https://www.altium.com/platform/security-compliance/security-advisories"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Stored Cross-Site Scripting in Altium Live Forum Leading to Cross-Customer Data Exposure",
"x_generator": {
"engine": "Vulnogram 0.5.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "4760f414-e1ae-4ff1-bdad-c7a9c3538b79",
"assignerShortName": "Altium",
"cveId": "CVE-2026-1009",
"datePublished": "2026-01-15T22:51:32.441Z",
"dateReserved": "2026-01-15T22:08:45.185Z",
"dateUpdated": "2026-01-20T20:15:28.251Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-1009\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-16T17:17:26.393184Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-16T17:17:37.928Z\"}}], \"cna\": {\"title\": \"Stored Cross-Site Scripting in Altium Live Forum Leading to Cross-Customer Data Exposure\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"impacts\": [{\"capecId\": \"CAPEC-63\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-63 Cross-Site Scripting\"}]}, {\"capecId\": \"CAPEC-122\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-122 Privilege Abuse\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 9, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Altium\", \"modules\": [\"Forum post editing and rendering\"], \"product\": \"Altium Live\", \"versions\": [{\"status\": \"affected\", \"changes\": [{\"at\": \"1.2.3\", \"status\": \"unaffected\"}], \"version\": \"0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"1.2.2\"}], \"platforms\": [\"Web\"], \"defaultStatus\": \"unaffected\"}], \"datePublic\": \"2026-01-15T22:48:00.000Z\", \"references\": [{\"url\": \"https://www.altium.com/platform/security-compliance/security-advisories\"}], \"x_generator\": {\"engine\": \"Vulnogram 0.5.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A stored cross-site scripting (XSS) vulnerability exists in the Altium Forum due to missing server-side input sanitization in forum post content. An authenticated attacker can inject arbitrary JavaScript into forum posts, which is stored and executed when other users view the affected post.\\nSuccessful exploitation allows the attacker\\u2019s payload to execute in the context of the victim\\u2019s authenticated Altium 365 session, enabling unauthorized access to workspace data, including design files and workspace settings. Exploitation requires user interaction to view a malicious forum post.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"A stored cross-site scripting (XSS) vulnerability exists in the Altium Forum due to missing server-side input sanitization in forum post content. An authenticated attacker can inject arbitrary JavaScript into forum posts, which is stored and executed when other users view the affected post.\u003cbr\u003eSuccessful exploitation allows the attacker\\u2019s payload to execute in the context of the victim\\u2019s authenticated Altium 365 session, enabling unauthorized access to workspace data, including design files and workspace settings. Exploitation requires user interaction to view a malicious forum post.\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-79\", \"description\": \"CWE-79 Improper Neutralization of Input During Web Page Generation (Cross-site Scripting)\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-284\", \"description\": \"CWE-284 Improper Access Control\"}]}], \"providerMetadata\": {\"orgId\": \"4760f414-e1ae-4ff1-bdad-c7a9c3538b79\", \"shortName\": \"Altium\", \"dateUpdated\": \"2026-01-20T20:15:28.251Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-1009\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-20T20:15:28.251Z\", \"dateReserved\": \"2026-01-15T22:08:45.185Z\", \"assignerOrgId\": \"4760f414-e1ae-4ff1-bdad-c7a9c3538b79\", \"datePublished\": \"2026-01-15T22:51:32.441Z\", \"assignerShortName\": \"Altium\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…