CVE-2026-1008: A stored cross-site scripting (XSS) vulnerability exists in the user profile text fields of Altium 365

Routine

HIGH 7.6DOWNGRADE

CVE-2026-1008 is a high-severity flaw (CVSS 7.6) affecting altium live. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 malicio

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.6 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 85%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-01-15
Last modified	2026-06-17

Publisher (CNA): Altium · Vendor: altium

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-15 23:15 UTCPublished CVE record published
2026-06-17 10:14 UTCUpdated Record last modified

altium altium live DOWNGRADE

Affected: 1.2.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.2

1. Check installed version

apt-cache policy altium-live || rpm -q altium-live || altium-live --version

2. No fixed release: DOWNGRADE to a release before 1.2.2 (Debian / Ubuntu)

apt-cache madison altium-live sudo apt install altium-live=<VERSION_BEFORE_1.2.2> sudo apt-mark hold altium-live

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list altium-live sudo dnf downgrade altium-live-<VERSION_BEFORE_1.2.2> sudo dnf versionlock add altium-live

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-1008?

altium live: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-1008 being exploited?

CVE-2026-1008 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-1008 affect?

CVE-2026-1008 affects altium live. Severity is high (CVSS 7.6). 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

How urgent is CVE-2026-1008?

Priority 30/100. High severity

Related CVEs

CVE-2026-1011 MEDIUM 6.1 UPGRADE A stored cross-site scripting (XSS) vulnerability exists in the Altium Support Center AddComment endpoint due
CVE-2026-1009 CRITICAL 9.0 DOWNGRADE A stored cross-site scripting (XSS) vulnerability exists in the Altium Forum due to missing server-side input

References

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