Medium severity · published Jun 4, 2026
CVE-2026-45287
OpenTelemetry-Go's Schema ParseFile leaks file descriptors on each parse
5.5
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GO
go.opentelemetry.io/otel/schema/v1.0 · open-telemetry
< 0.0.17 · source: vendor
GO
go.opentelemetry.io/otel/schema/v1.1 · open-telemetry
< 0.0.17 · source: vendor
TS
Telemetry Schema Files · Opentelemetry
before 0.0.17 · source: NVD
Affected product
GO
go.opentelemetry.io/otel/schema/v1.0
open-telemetry
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45287
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-45287
Patch
https://github.com/open-telemetry/opentelemetry-go/commit/e72a235518cb773137efd80336a179028bc34684
Patch
https://github.com/open-telemetry/opentelemetry-go/commit/f12d198f161b61735d65705248715aa97021ba8d
Exploit
https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-995v-fvrw-c78m
