CVE-2026-1008Network attack vector

Victim-session compromise via stored profile script injection

Published Jan 15, 2026 · Updated Jan 15, 2026

Stored XSS in Altium 365 user profile fields allows remote authenticated users to execute scripts when others view a crafted profile. Server-side filtering accepts whitespace-obfuscated HTML attributes, stores the payload, and later renders it as executable markup. A standard account can plant the payload, but execution requires another user to open the profile, enabling session-token theft, phishing, or redirects.

CVSS severity7.6
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Altium 365 user profile fields allows remote authenticated users to execute scripts when others view a crafted profile. Server-side filtering accepts whitespace-obfuscated HTML attributes, stores the payload, and later renders it as executable markup. A standard account can plant the payload, but execution requires another user to open the profile, enabling session-token theft, phishing, or redirects.

The record

CVE
CVE-2026-1008
Published
Jan 15, 2026
Updated
Jan 15, 2026
Vendor
Altium
Product
Altium 365
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Altium · Altium 365version=unspecified

Published CVSS scores

7.6AltiumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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