Information Exposure Affecting elastic-agent-fips-9.4 package, versions <9.4.3-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published2 Jul 2026
- disclosed13 May 2026
Introduced: 13 May 2026
CVE-2026-42602 (opens in a new tab)How to fix?
Upgrade Chainguard elastic-agent-fips-9.4 to version 9.4.3-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream elastic-agent-fips-9.4 package and not the elastic-agent-fips-9.4 package as distributed by Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
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).