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
CVE-2024-42368
This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 88% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.5
- EG Score
- 6.5(medium)
- EG Risk
- —
- EPSS
- 46.0%
- KEV
- Not listed
Published
August 13, 2024
Last Modified
April 15, 2026
References (3)
- security-advisories@githubhttps://github.com/open-telemetry/opentelemetry-collector-contrib/commit/c9bd3eff0bb357d9c812a0d8defd3b09db95699a
- security-advisories@githubhttps://github.com/open-telemetry/opentelemetry-collector-contrib/pull/34516
- security-advisories@githubhttps://github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-rfxf-mf63-cpqv
Affected Packages
(1 across 1 ecosystem)
Go(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| github.com/open-telemetry/opentelemetry-collector-contrib/extension/bearertokenauthextension | — | 0.107.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 44× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 116 total refreshes for this CVE.
- 2026-07-22 14:07 UTCEPSS rescore
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- 2026-06-04 13:09 UTCOSV refresh
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Frequently asked(5)
What is CVE-2024-42368?
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What is the CVSS score of CVE-2024-42368?
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Dependency Blast Radius
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