EUVD-2026-44028
GHSA-84r5-fg22-5vjv
Severity by source
AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Requires existing authenticated low-privilege access (PR:L) and non-trivial conditions (AC:H); improper auth crosses a security boundary (S:C) yielding high C/I but no availability impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Lifecycle Timeline
2DescriptionCVE.org
Improper authentication in Azure Spring Apps allows an authorized attacker to elevate privileges over a network.
Articles & Coverage 1
AnalysisAI
Privilege elevation in Microsoft Azure Spring Apps allows an already-authenticated, low-privileged network attacker to gain higher privileges by abusing an improper authentication weakness (CWE-287) in the managed platform. Because the CVSS scope is marked as changed (S:C), a successful attack can reach resources beyond the attacker's originally authorized boundary, yielding high confidentiality and integrity impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to already hold low-level authenticated access to the Azure Spring Apps environment (CVSS PR:L) - this is not exploitable by a fully anonymous outsider. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score is 8.2 (High) with vector AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N: network reachable, but high attack complexity (AC:H) and a requirement for existing low-level privileges (PR:L) temper it, while the scope change and dual High confidentiality/integrity impact raise it. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A low-privileged but authenticated user of an Azure Spring Apps instance (for example, a developer or a compromised low-tier service principal) crafts requests that exploit the improper authentication check to assert privileges beyond their assigned role. Due to the changed scope, they reach and read or modify resources belonging to a higher-privileged context, compromising confidentiality and integrity. … |
| Remediation | Patch available per vendor advisory - because Azure Spring Apps is a Microsoft-managed service, the fix is applied server-side by Microsoft and customers generally require no manual package upgrade; confirm remediation and any required tenant-side action directly at the MSRC guidance (https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50338). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and document all Azure Spring Apps instances in production and non-production environments, then review access logs for the past 30 days to detect any unauthorized privilege escalation attempts. …
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Same weakness CWE-287 – Improper Authentication
View allSame technique Authentication Bypass
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External POC / Exploit Code
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