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2 vulnerabilities found for opentelemetry_collector_contrib by opentelemetry

CVE-2026-42602 (GCVE-0-2026-42602)

Vulnerability from nvd – Published: 2026-05-13 20:12 – Updated: 2026-05-14 12:52
VLAI
Title
azureauthextension Authenticate method does not validate bearer tokens, allowing auth bypass via replay
Summary
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).
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-208 - Observable Timing Discrepancy
  • CWE-287 - Improper Authentication
  • CWE-290 - Authentication Bypass by Spoofing
  • CWE-294 - Authentication Bypass by Capture-replay
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
open-telemetry opentelemetry-collector-contrib Affected: >= 0.124.0, <= 0.150.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-42602 (GCVE-0-2026-42602)

Vulnerability from cvelistv5 – Published: 2026-05-13 20:12 – Updated: 2026-05-14 12:52
VLAI
Title
azureauthextension Authenticate method does not validate bearer tokens, allowing auth bypass via replay
Summary
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).
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-208 - Observable Timing Discrepancy
  • CWE-287 - Improper Authentication
  • CWE-290 - Authentication Bypass by Spoofing
  • CWE-294 - Authentication Bypass by Capture-replay
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
open-telemetry opentelemetry-collector-contrib Affected: >= 0.124.0, <= 0.150.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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