CVE-2026-45287: OpenTelemetry-Go is the Go implementation of OpenTelemetry

Q: How do I fix CVE-2026-45287?

telemetry schema files: upgrade to 0.0.17. Exact commands for each OS are on this page.

Q: Is CVE-2026-45287 being exploited?

CVE-2026-45287 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-45287 affect?

CVE-2026-45287 affects telemetry schema files. Severity is medium (CVSS 5.5). 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

Q: How urgent is CVE-2026-45287?

Priority 26/100. Public exploit reference

Routine

MEDIUM 5.5UPGRADE

CVE-2026-45287 is a medium-severity flaw (CVSS 5.5) affecting telemetry schema files. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 94%)
CISA exploited list	No
Weakness	CWE-772, CWE-775
Published	2026-06-04
Last modified	2026-07-22

Publisher (CNA): GitHub, Inc. · Vendor: opentelemetry

Last updated 2026-07-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-04 16:16 UTCPublished CVE record published
2026-07-22 20:10 UTCUpdated Record last modified

opentelemetry telemetry schema files UPGRADE

Affected: < 0.0.17

Fixed in: 0.0.17

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy telemetry-schema-files || rpm -q telemetry-schema-files || telemetry-schema-files --version

2. UPGRADE to 0.0.17 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade telemetry-schema-files

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade telemetry-schema-files

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-45287?

telemetry schema files: upgrade to 0.0.17. Exact commands for each OS are on this page.

Is CVE-2026-45287 being exploited?

CVE-2026-45287 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-45287 affect?

CVE-2026-45287 affects telemetry schema files. Severity is medium (CVSS 5.5). 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

How urgent is CVE-2026-45287?

Priority 26/100. Public exploit reference

References

← Back to latest CVEs