How severe is CVE-2026-1008?

CVE-2026-1008 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2026-1008 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-1008?

CVE-2026-1008 affects Altium Altium Live. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-1008?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-1008 have an EU (EUVD) identifier?

Yes. CVE-2026-1008 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3046.

When was CVE-2026-1008 published?

CVE-2026-1008 was published on 2026-01-15 and last updated on 2026-06-17.

CVE-2026-1008

CVE-2026-1008 is a high-severity vulnerability in Altium Altium Live with a CVSS 3.x base score of 7.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: High (CVSS 3.x base score 7.6)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3046
Weakness: CWE-79
Affected product: Altium Altium Live
Published: 2026-01-15
Last modified: 2026-06-17

Description

A stored cross-site scripting (XSS) vulnerability exists in the user profile text fields of Altium 365. Insufficient server-side input sanitization allows authenticated users to inject arbitrary HTML and JavaScript payloads using whitespace-based attribute parsing bypass techniques. The injected payload is persisted and executed when other users view the affected profile page, potentially allowing session token theft, phishing attacks, or malicious redirects. Exploitation requires an authenticated account and user interaction to view the crafted profile.

Frequently asked questions

What is CVE-2026-1008?: A stored cross-site scripting (XSS) vulnerability exists in the user profile text fields of Altium 365. Insufficient server-side input sanitization allows authenticated users to inject arbitrary HTML and JavaScript payloads using whitespace-based attribute parsing bypass techniques. The injected payload is persisted and executed when other users view the affected profile page, potentially allowing session token theft, phishing attacks, or malicious redirects. Exploitation requires an authenticated account and user interaction to view the crafted profile.
How severe is CVE-2026-1008?: CVE-2026-1008 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2026-1008 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-1008?: CVE-2026-1008 affects Altium Altium Live. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-1008?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-1008 have an EU (EUVD) identifier?: Yes. CVE-2026-1008 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3046.
When was CVE-2026-1008 published?: CVE-2026-1008 was published on 2026-01-15 and last updated on 2026-06-17.

References

https://www.altium.com/platform/security-compliance/security-advisories

Affected products (1)

cpe:2.3:a:altium:altium_live:1.2.2:*:*:*:*:*:*:*

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