CVE-2026-129360 — MAGMA
HIGHCVE-2026-129360 is a high-severity (CVSS 7.3) Authentication Bypass by Spoofing vulnerability in linux_foundation magma. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.
A weakness has been identified in Linux Foundation Magma up to 1.9.0. The impacted element is an unknown function of the file orc8r/cloud/go/services/obsidian/access/operator.go of…
Description
A weakness has been identified in Linux Foundation Magma up to 1.9.0. The impacted element is an unknown function of the file orc8r/cloud/go/services/obsidian/access/operator.go of the component Obsidian REST. Executing a manipulation of the argument X-Magma-Client-Cert-Serial can lead to authentication bypass by spoofing. The attack can be launched remotely. The vendor was contacted early about this disclosure but did not respond in any way.
Affected Products
magmalinux_foundationDetection & mitigation playbook
Vendor / applianceDetect
Inventory every linux_foundation magma deployment and check each version against the affected-products list above.
Remediation status
The records we use list no fixed version for CVE-2026-129360. Check the linux_foundation magma advisory for a patched release, and apply the workarounds below until you can upgrade.
Mitigate without a patch
Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.
Frequently Asked Questions
Is CVE-2026-129360 being exploited in your environment?
Detect and block the exploit chain at execution, on systems you cannot patch yet.