Vulnerability · Published Jun 4, 2026 · Assigned by GitHub_M
CVE-2026-45287OpenTelemetry-Go's Schema ParseFile leaks file descriptors on each parse
Low 2.1
In plain English
A low-severity security flaw in go.opentelemetry.io/otel/schema/v1.0 from open-telemetry. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | golang-opentelemetry-otel | no fix listed | DEBIAN-CVE-2026-45287 |
| Debian:13 | golang-opentelemetry-otel | no fix listed | DEBIAN-CVE-2026-45287 |
| Debian:14 | golang-opentelemetry-otel | 1.46.0-2 | DEBIAN-CVE-2026-45287 |
| Go | go.opentelemetry.io/otel/schema | 0.0.17 | GHSA-995v-fvrw-c78m |
| Go | go.opentelemetry.io/otel/schema | 0.0.17 | GO-2026-5281 |
| Go | go.opentelemetry.io/otel/schema/v1.0 | 0.0.17 | GHSA-995v-fvrw-c78m |
| Go | go.opentelemetry.io/otel/schema/v1.1 | 0.0.17 | GHSA-995v-fvrw-c78m |
| Ubuntu:22.04:LTS | golang-opentelemetry-otel | no fix listed | UBUNTU-CVE-2026-45287 |
| Ubuntu:24.04:LTS | golang-opentelemetry-otel | no fix listed | UBUNTU-CVE-2026-45287 |
| Ubuntu:25.10 | golang-opentelemetry-otel | no fix listed | UBUNTU-CVE-2026-45287 |
| Ubuntu:26.04:LTS | golang-opentelemetry-otel | no fix listed | UBUNTU-CVE-2026-45287 |
| Ubuntu:26.10 | golang-opentelemetry-otel | no fix listed | UBUNTU-CVE-2026-45287 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| open-telemetry | go.opentelemetry.io/otel/schema/v1.1 | < 0.0.17 |
| open-telemetry | go.opentelemetry.io/otel/schema/v1.0 | < 0.0.17 |
Weakness: CWE-772, CWE-775 · Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
References
- https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-995v-fvrw-c78m x_refsource_CONFIRM
- https://github.com/open-telemetry/opentelemetry-go/commit/e72a235518cb773137efd80336a179028bc34684 x_refsource_MISC
- https://github.com/open-telemetry/opentelemetry-go/commit/f12d198f161b61735d65705248715aa97021ba8d x_refsource_MISC