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VulnerabilityPublished Updated

CVE-2026-11424: Altium Enterprise Server · Server-Side Request Forgery (SSRF)

Affects Altium Enterprise ServerSource CVE Database V5

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Not known to be exploited · CVSS 8.3 High : upgrade to 8.1.1 soon.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 4.0 base score
8.3High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 13% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 8.1.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade Altium Enterprise Server to 8.1.1.

Affected software

ProductAffectedFixed in
AltiumAltium Enterprise ServerAffected
  • <8.1.1
Fixed in
  • 8.1.1
AltiumAltium 365Affected
  • =unspecified
Fixed in–

AI-suggested

A fix is available in Altium Enterprise Server version 8.1.1. Users should upgrade to this version to remediate the vulnerability. For Altium 365, the vendor has already remediated the issue at the service level, so no user action is required for the cloud service.

Description

A server-side request forgery (SSRF) vulnerability exists in a GraphQL service component shared by Altium Enterprise Server and Altium 365. An authenticated user can submit a request whose input is treated as a URL by the server and used to issue an outbound HTTP GET request without URL validation or destination filtering. The response body is then returned to the user. This allows an authenticated attacker to reach internal services and metadata endpoints that would not otherwise be accessible from the public network, and to retrieve their contents. The impact is information disclosure and internal infrastructure reconnaissance; the request primitive is limited to HTTP GET with no custom headers. Altium Enterprise Server is fixed in 8.1.1; the issue has been remediated in Altium 365 at the service level.

References

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