CVE-2026-45686

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 73% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. From version 0.7.0 to before version 0.9.0, a remotely reachable integer overflow in OBI's memcached text protocol parser can crash the OBI process and cause denial of service. When parsing memcached storage commands such as set, add, replace, append, prepend, or cas, OBI accepts extremely large values and adds the payload delimiter length without checking for overflow. A crafted request with set to math.MaxInt or math.MaxInt-1 causes the computed payload length to wrap negative and triggers a runtime panic in LargeBufferReader.Peek. This issue has been patched in version 0.9.0.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
27.6%
KEV
Not listed

Published

May 18, 2026

Last Modified

June 3, 2026

Advisory Details (2)

Auto-updated Jun 9, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github.
github Patch Available🟡 PoC Available

Memcached payload length overflow can crash OBI · Advisory · open-telemetry/opentelemetry-ebpf-instrumentation · GitHub

https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-43g7-cwr8-q3jh
github_release Patch Available

v0.9.0

Patch available: open-telemetry/opentelemetry-ebpf-instrumentation v0.9.0

https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0

Vendor Advisories for CVE-2026-45686(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
go.opentelemetry.io/obi—0.9.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 47× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 02:00 UTCEPSS rescore
  3. 2026-07-13 22:30 UTCEPSS rescore
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  7. 2026-07-09 19:10 UTCEPSS rescore
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  11. 2026-07-06 02:23 UTCEPSS rescore
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  15. 2026-06-30 23:22 UTCEPSS rescore
  16. 2026-06-29 21:04 UTCEG score recompute
  17. 2026-06-29 14:06 UTCEPSS rescore
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  19. 2026-06-28 14:07 UTCEPSS rescore
  20. 2026-06-28 10:48 UTCEG score recompute
  21. 2026-06-28 04:56 UTCEPSS rescore
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  23. 2026-06-27 21:48 UTCEG score recompute
  24. 2026-06-27 08:50 UTCEG score recompute
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  1. 2026-06-26 19:53 UTCEG score recompute
  2. 2026-06-25 17:28 UTCEG score recompute
  3. 2026-06-25 13:49 UTCEPSS rescore
  4. 2026-06-24 14:05 UTCEPSS rescore
  5. 2026-06-23 21:33 UTCEPSS rescore
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  7. 2026-06-22 14:25 UTCEPSS rescore
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  9. 2026-06-21 14:56 UTCEPSS rescore
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  11. 2026-06-21 01:59 UTCEPSS rescore
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  15. 2026-06-18 17:52 UTCEPSS rescore
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  17. 2026-06-18 02:19 UTCEG score recompute
  18. 2026-06-17 17:53 UTCEPSS rescore
  19. 2026-06-17 13:13 UTCEG score recompute
  20. 2026-06-16 21:33 UTCEG score recompute
  21. 2026-06-16 17:52 UTCEPSS rescore
  22. 2026-06-16 05:54 UTCEG score recompute
  23. 2026-06-15 17:49 UTCEPSS rescore
  24. 2026-06-15 16:56 UTCEG score recompute
  25. 2026-06-15 00:59 UTCEG score recompute
  26. 2026-06-14 11:47 UTCEG score recompute
  27. 2026-06-13 23:00 UTCEPSS rescore
  28. 2026-06-13 22:50 UTCEG score recompute
  29. 2026-06-13 03:50 UTCEG score recompute
  30. 2026-06-12 23:12 UTCEPSS rescore
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  32. 2026-06-12 14:24 UTCEG score recompute
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  35. 2026-06-11 12:26 UTCEG score recompute
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  37. 2026-06-10 22:18 UTCEPSS rescore
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  40. 2026-06-10 10:32 UTCEG score recompute
  41. 2026-06-09 21:36 UTCEG score recompute
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  43. 2026-06-08 19:37 UTCEG score recompute
  44. 2026-06-08 14:17 UTCEPSS rescore
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  46. 2026-06-08 05:41 UTCEG score recompute
  47. 2026-06-07 16:45 UTCEG score recompute
  48. 2026-06-07 15:25 UTCEPSS rescore
  49. 2026-06-07 15:25 UTCEPSS rescore
  50. 2026-06-07 03:48 UTCEG score recompute
  51. 2026-06-06 14:51 UTCEG score recompute
  52. 2026-06-06 13:47 UTCEPSS rescore
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  54. 2026-06-06 01:53 UTCEG score recompute
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  56. 2026-06-05 12:57 UTCEG score recompute
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  60. 2026-06-04 13:12 UTCEPSS rescore
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  62. 2026-06-04 10:55 UTCEG score recompute
  63. 2026-06-03 21:58 UTCEG score recompute
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  68. 2026-06-01 05:12 UTCEG score recompute
  69. 2026-05-24 06:15 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-45686?
CVE-2026-45686 is a high vulnerability published on May 18, 2026. OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. From version 0.7.0 to before version 0.9.0, a remotely reachable integer overflow in OBI's memcached text protocol parser can crash the OBI process and cause denial of service. When parsing…
When was CVE-2026-45686 disclosed?
CVE-2026-45686 was first published in the National Vulnerability Database on May 18, 2026, with the most recent update on June 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45686 actively exploited?
CVE-2026-45686 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 27.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45686?
CVE-2026-45686 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-45686?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45686, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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