CVE-2026-1011
Last modified
CVE-2026-1011 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. A stored cross-site scripting (XSS) vulnerability exists in the Altium Support Center AddComment endpoint due to missing server-side input sanitization. Although the client interface applies HTML escaping, the backend accepts and stores arbitrary HTML and JavaScript supplied via modified POST requests. The injected content is rendered verbatim when support cases are viewed by other users, including support staff with elevated privileges, allowing execution of arbitrary JavaScript in the victim’s browser context.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.
Description
A stored cross-site scripting (XSS) vulnerability exists in the Altium Support Center AddComment endpoint due to missing server-side input sanitization. Although the client interface applies HTML escaping, the backend accepts and stores arbitrary HTML and JavaScript supplied via modified POST requests. The injected content is rendered verbatim when support cases are viewed by other users, including support staff with elevated privileges, allowing execution of arbitrary JavaScript in the victim’s browser context.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Altium | Altium Live | <= 1.1.1.39 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-1011?
How severe is CVE-2026-1011?
How do I fix CVE-2026-1011?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-10104The Product Video Gallery for Woocommerce plugin for WordPre…4.4
- CVE-2026-10105agno 2.6.5 contains a SQL injection vulnerability in the Cli…8.7
- CVE-2026-10106Mattermost versions 11.7.x <= 11.7.2, 11.6.x <= 11.6.4, 10.1…6.5
- CVE-2026-10107MoviePilot v2 contains a server-side request forgery vulnera…7.7
- CVE-2026-10108xiaomusic v0.5.7 contains an unauthenticated path traversal …8.7
- CVE-2026-10109IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is …9.8
- CVE-2026-10110A vulnerability was detected in code-projects Student Detail…7.3
- CVE-2026-10111A flaw has been found in sambitraj STUDENT-MANAGEMENT-SYSTEM…7.3
- CVE-2026-10112A vulnerability has been found in sambitraj STUDENT-MANAGEME…2.4
- CVE-2026-10113A vulnerability was found in Open5GS up to 2.7.7. Affected b…4.3
- CVE-2026-10114A vulnerability was determined in Open5GS up to 2.7.7. Affec…4.3
- CVE-2026-10115A vulnerability was identified in Open5GS up to 2.7.7. This …4.3
Are you affected by CVE-2026-1011?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST