CVE-2026-45676 json
OpenTelemetry eBPF Instrumentation: Unsafe fastelf parsing allows malformed ELF to crash agent
published 2026-05-18 5 mo ago modified 2026-07-22 3 mo ago also EUVD-2026-33951 , GHSA-wp73-mwgf-4jq9 , GO-2026-5714
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 5%
- public exploits
- 0
- none known
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.
Patch / fix
- go go.opentelemetry.io/obi 0.9.0
- opentelemetry ebpf_instrumentation 0.9.0
- opentelemetry opentelemetry_ebpf_instrumentation 0.9.0
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-wp73-mwgf-4jq9 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | go.opentelemetry.io/obi | <0.9.0 |
0.9.0 |
Affected products
- open-telemetry opentelemetry-ebpf-instrumentation
Classification
References
-
github.com
/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-wp73-mwgf-4jq9
exploit, web, vendor-advisory, advisory
-
github.com
/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0
web, product, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-45676
advisory
-
github.com
/open-telemetry/opentelemetry-ebpf-instrumentation
package
Sources
- CVE List CVE-2026-45676
- GitHub Advisory GHSA-wp73-mwgf-4jq9
- NVD CVE-2026-45676
- OSV GO-2026-5714
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.