Vulnerability in Open-Telemetry Go.opentelemetry.io/otel/schema/v1.0
CVE-2026-45287
OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.0.17, `go.opentelemetry.io/otel/schema/v1.0` and `go.opentelemetry.io/otel/schema/v1.1` leaks one file descriptor on each successful `ParseFile` call. `ParseFile` opens the schema file and passes it to `Parse` without closing it; repeated parsing in a long-running process can exhaust the process file descriptor limit and cause denial of service. Exploitation depends on a consuming application exposing repeated schema parsing to an attacker-controlled path. Version 0.0.17 contains a patch for the issue.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (6.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Open-Telemetry Go.opentelemetry.io/otel/schema/v1.0 — versions < 0.0.17
- Open-Telemetry Go.opentelemetry.io/otel/schema/v1.1 — versions < 0.0.17
- Opentelemetry Telemetry Schema Files
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-45287?
- CVE-2026-45287 is a medium-severity vulnerability in Open-Telemetry Go.opentelemetry.io/otel/schema/v1.0, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 5.5/10. Published 2026-06-04.
- How severe is CVE-2026-45287?
- Medium severity. CVSS v3 base score is 5.5 out of 10.