Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The Go module github.com/open-telemetry/opentelemetry-collector-contrib/extension/bearertokenauthextension is affected in versions from 0.80.0 before 0.107.0. A client with network access to a collector using the bearertokenauth server authenticator could use a timing attack, measuring response times while sending candidate tokens, to guess the configured token. Upgrade to version 0.107.0 or later. If you cannot upgrade, stop exposing the affected receiver to untrusted networks or switch to a different authentication extension.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.5 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0062, the 49th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:15 UTC First seen by agentprime
- 31 Oct 2026, 14:15 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-rfxf-mf63-cpqv
- OSV: GHSA-rfxf-mf63-cpqv
- github.com/open-telemetry/opentelemetry-collector-contrib/security/advisories/GHSA-rfxf-mf63-cpqv
- nvd.nist.gov/vuln/detail/CVE-2024-42368
- github.com/open-telemetry/opentelemetry-collector-contrib/pull/34516
- github.com/open-telemetry/opentelemetry-collector-contrib/commit/c9bd3eff0bb357d9c812a0d8defd3b09db95699a
- github.com/open-telemetry/opentelemetry-collector-contrib