TI-2026-33418 Aliases CVE-2026-45676 GHSA-wp73-mwgf-4jq9

OpenTelemetry eBPF Instrumentation: Unsafe fastelf parsing allows malformed ELF to crash agent

MEDIUM 58CWE-20Published 2026-06-02 · Updated 2026-06-02

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-248.

Summary

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, OBI's replacement ELF parser trusts section offsets, counts, and string offsets from the executable file. A crafted local ELF can make OBI dereference invalid section pointers or slice past string tables, causing the agent to panic while determining the process language. This issue has been patched in version 0.9.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00162 5th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed opentelemetry-ebpf-instrumentation (open-telemetry): 0.9.0go.opentelemetry.io/obi (Go): 0.9.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
open-telemetry	opentelemetry-ebpf-instrumentation	before 0.9.0	0.9.0	Patch available	CNA
—	go.opentelemetry.io/obi (Go)	before 0.9.0	0.9.0	Patch available	GHSA-wp73-mwgf-4jq9

opentelemetry-ebpf-instrumentation Vendoropen-telemetry Affected before 0.9.0 Fixed in 0.9.0 Patch available CNA
go.opentelemetry.io/obi (Go) Vendor— Affected before 0.9.0 Fixed in 0.9.0 Patch available GHSA-wp73-mwgf-4jq9

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:opentelemetry:ebpf_instrumentation::::::go::*	before 0.9.0	Vulnerable	open-telemetry

cpe:2.3:a:opentelemetry:ebpf_instrumentation:*:*:*:*:*:go:*:* Versions before 0.9.0 Vulnerable ·open-telemetry

Remediation

Fix · CNA opentelemetry-ebpf-instrumentation (open-telemetry) Fixed in 0.9.0
Fix · GHSA-wp73-mwgf-4jq9 go.opentelemetry.io/obi (Go) Fixed in 0.9.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-45676
2026-10-03 Alias added: GHSA-wp73-mwgf-4jq9

References

Exploit 1

https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-wp73-mwgf-4jq9

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-45676

Other 2

TI-2026-33428 OpenTelemetry eBPF Instrumentation: Memcached payload length overflow can crash OBI CVSS 3.1HIGH 7.5
TI-2026-33427 OpenTelemetry eBPF Instrumentation: MongoDB parser panics on malformed wire messages CVSS 3.1HIGH 7.5
TI-2026-33420 OpenTelemetry eBPF Instrumentation: Postgres BIND parsing can panic on malformed payloads CVSS 3.1HIGH 7.5
TI-2026-33421 OpenTelemetry eBPF Instrumentation: Redis error text is exported in span status messages CVSS 3.1MEDIUM 6.5
TI-2026-33422 OpenTelemetry eBPF Instrumentation: Unbounded BPF internal metrics replay can exhaust CPU CVSS 3.1HIGH 7.5
TI-2026-33423 OpenTelemetry eBPF Instrumentation: CPU-mismatch fallback uses 256-byte buffer with 8KB size CVSS 3.1MEDIUM 5.9

See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences