How severe is CVE-2026-45287?

CVE-2026-45287 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-45287 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-45287?

CVE-2026-45287 affects Opentelemetry Telemetry Schema Files. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-45287?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-45287 have an EU (EUVD) identifier?

Yes. CVE-2026-45287 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34291.

When was CVE-2026-45287 published?

CVE-2026-45287 was published on 2026-06-04 and last updated on 2026-06-18.

CVE-2026-45287

CVE-2026-45287 is a medium-severity vulnerability in Opentelemetry Telemetry Schema Files with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-772.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v4: 2.1
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34291
Weakness: CWE-772
Affected product: Opentelemetry Telemetry Schema Files
Published: 2026-06-04
Last modified: 2026-06-18

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-45287?: CVE-2026-45287 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-45287 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-45287?: CVE-2026-45287 affects Opentelemetry Telemetry Schema Files. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-45287?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-45287 have an EU (EUVD) identifier?: Yes. CVE-2026-45287 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34291.
When was CVE-2026-45287 published?: CVE-2026-45287 was published on 2026-06-04 and last updated on 2026-06-18.

References

Affected products (1)

cpe:2.3:a:opentelemetry:telemetry_schema_files:*:*:*:*:*:go:*:*

Other CWE-772 vulnerabilities

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CVE-2017-14138 — Critical (CVSS 9.8): ImageMagick 7.0.6-5 has a memory leak vulnerability in ReadWEBPImage in coders/webp.c because memory is not freed in…
CVE-2017-11641 — Critical (CVSS 9.8): GraphicsMagick 1.3.26 has a Memory Leak in the PersistCache function in magick/pixel_cache.c during writing of Magick…
CVE-2020-14339 — High (CVSS 8.8): A flaw was found in libvirt, where it leaked a file descriptor for `/dev/mapper/control` into the QEMU process. This…
CVE-2018-19760 — High (CVSS 8.8): cfg_init in confuse.c in libConfuse 3.2.2 has a memory leak.

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