216.73.217.22

CVE-2026-42602

· Published 13/05/2026 21:16 · Modified 14/05/2026 18:17

Labels: CVE-2026-42602 2026-05-13CVE-2026-42602CWE-208[email protected]

Essential information

Published
13/05/2026 21:16
Modified
14/05/2026 18:17
Author
Creator
CVSS
8.1 HIGH (v3.1)
CISA KEV
No
CWE
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS metrics

Description

azureauthextension is the Azure Authenticator Extension. From 0.124.0 to 0.150.0, a server-side authentication bypass in azureauthextension allows any party who holds a single valid Azure access token for any scope the collector's configured identity can mint for to authenticate to any OpenTelemetry receiver that uses auth: azure_auth. The extension's Authenticate method does not validate incoming bearer tokens as JWTs. Instead, it calls its own configured credential to obtain an access token and compares the client's token to the result with string equality — and the scope for that server-side token request is taken from the client-supplied Host header. As a result, a token minted for any Azure resource the service principal has ever been issued a token for (ARM, Graph, Key Vault, Storage, etc.) will authenticate to the collector if the attacker picks a matching Host. Tokens are replayable for the full issued lifetime (commonly several hours for managed identity tokens).

NVD status

Status
Awaiting Analysis — CVE has been recently published to the CVE List and has been received by the NVD.
Source
[email protected]
NVD
View on NVD

Affected products (CPE)

ProductCPE
microsoft / azureauthextension cpe:2.3:a:microsoft:azureauthextension:0.124.0-0.150.0:*:*:*:*:*:*:*

References