{"schemaVersion":3,"id":"CVE-2026-45686","aliases":["GHSA-43g7-cwr8-q3jh","GO-2026-5107"],"status":"published","duplicateOf":null,"title":null,"description":"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 <bytes> values and adds the payload delimiter length without checking for overflow. A crafted request with <bytes> 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.","dates":{"published":"2026-06-02T15:25:55.764Z","modified":"2026-06-03T13:48:21.673Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · 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Ebpf Instrumentation","source":"github","url":"https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-8gmg-3w2q-65f4","maturity":"poc","reliabilityScore":0.3,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-190","name":"Integer Overflow or Wraparound","description":"The product performs a calculation that can\n         produce an integer overflow or wraparound when the logic\n         assumes that the resulting value will always be larger than\n         the original value. This occurs when an integer value is\n         incremented to a value that is too large to store in the\n         associated representation. When this occurs, the value may\n         become a very small or negative number.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/190.html"}],"affected":[{"vendor":"go.opentelemetry.io","product":"obi","name":"go.opentelemetry.io/obi","label":"obi","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/go.opentelemetry.io/obi","purlType":"golang","versions":[{"text":"≥ 0.7.0, < 0.9.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 0.7.0, < 0.9.0","eol":null,"hubHref":null},{"vendor":"open-telemetry","product":"opentelemetry-ebpf-instrumentation","name":"opentelemetry-ebpf-instrumentation","label":"opentelemetry-ebpf-instrumentation","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 0.7.0, < 0.9.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 0.7.0, < 0.9.0","eol":null,"hubHref":"/vendor/open-telemetry/opentelemetry-ebpf-instrumentation"},{"vendor":"opentelemetry","product":"ebpf_instrumentation","name":"ebpf instrumentation","label":"ebpf_instrumentation","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 0.7.0, < 0.9.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 0.7.0, < 0.9.0","eol":null,"hubHref":"/vendor/opentelemetry/ebpf_instrumentation"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-43g7-cwr8-q3jh","label":"github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-43g7-cwr8-q3jh","hostname":"github.com","tags":["X Refsource CONFIRM","WEB","Advisory","Exploit","Vendor Advisory"]},{"url":"https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0","label":"github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0","hostname":"github.com","tags":["X Refsource MISC","WEB","Product","Release Notes"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45686","label":"nvd.nist.gov/vuln/detail/CVE-2026-45686","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation","label":"github.com/open-telemetry/opentelemetry-ebpf-instrumentation","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2026:11053-1","OPENSUSE-SU-2026:21251-1","OPENSUSE-SU-2026:21483-1","SUSE-SU-2026:22575-1","SUSE-SU-2026:2824-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:11053-1","OPENSUSE-SU-2026:21251-1","OPENSUSE-SU-2026:21483-1","SUSE-SU-2026:22575-1","SUSE-SU-2026:2824-1"]},"timeline":[{"kind":"published","date":"2026-06-02T15:25:55.764Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-03T13:48:21.673Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":40,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T02:21:43.040Z","stale":false,"partial":false}}