CVE-2024-42368: medium-severity vulnerability in open-telemetry opentelemetry-collector-contrib
open-telemetry has an Observable Timing Discrepancy
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.6%
OpenTelemetry, also known as OTel, is a vendor-neutral open source Observability framework for instrumenting, generating, collecting, and exporting telemetry data such as traces, metrics, and logs. The bearertokenauth extension's server authenticator performs a simple, non-constant time string comparison of the received & configured bearer tokens. This impacts anyone using the `bearertokenauth` server authenticator. Malicious clients with network access to the collector may perform a timing attack against a collector with this authenticator to guess the configured token, by iteratively sending tokens and comparing the response time. This would allow an attacker to introduce fabricated or bad data into the collector's telemetry pipeline. The observable timing vulnerability was fixed by using constant-time comparison in 0.107.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Affected products
open-telemetry · opentelemetry-collector-contribRelated CVEs — open-telemetry opentelemetry-collector-contrib
In the same product, most dangerous first.
CVE-2026-55701MEDIUMOpenTelemetry githubreceiver silently ignores configured required_headers authenticationEPSS 0.7%CVE-2024-45043MEDIUMOpenTelemetry Collector AWS Firehose Receiver Authentication Bypass VulnerabilityEPSS 0.5%CVE-2026-47256MEDIUMOpenTelemetry: Path traversal in Sentry exporter via attacker-controlled service.name reaches privileged Sentry API endpoints with operator bearer tokenEPSS 0.4%CVE-2026-42602HIGHazureauthextension Authenticate method does not validate bearer tokens, allowing auth bypass via replayEPSS 0.2%
References
https://github.com/open-telemetry/opentelemetry-collector-contrib/commit/c9bd3eff0bb357d9c812a0d8defd3b09db95699ahttps://github.com/open-telemetry/opentelemetry-collector-contrib/pull/34516https://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-rfxf-mf63-cpqv