Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The OpenTelemetry-Go OpenTracing bridge (go.opentelemetry.io/otel/bridge/opentracing) versions from 0.11.0 before 1.45.0 are affected. Concurrent calls to SetBaggageItem and correlation.MapFromContext on the same span can access an unsynchronized map, causing a fatal runtime panic that crashes the process. The attack requires a specific bridge configuration with correlation hooks and concurrent use of one span. Upgrade to version 1.45.0 or later.
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 |
|---|---|---|---|---|
| 5.9 | Medium | 4.0 | CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0014, the 3rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:13 UTC First seen by agentprime
- 31 Oct 2026, 14:13 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-42cj-99w8-cp2p
- OSV: GHSA-42cj-99w8-cp2p
- github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-42cj-99w8-cp2p
- github.com/open-telemetry/opentelemetry-go/pull/8693
- github.com/open-telemetry/opentelemetry-go/commit/93a693edeed0e07ce5ebd1dfe67af42d1e2055d8
- github.com/open-telemetry/opentelemetry-go
- github.com/open-telemetry/opentelemetry-go/releases/tag/v1.45.0