{"schema":"threatline.record/2","record":{"id":"CVE-2026-102360","aliases":["GHSA-r5c8-rf4w-qrq8"],"summary":"lib0 `readUint8Array` performs an unbounded read past the end of the decoder’s view, disclosing adjacent process memory","details":"A missing bounds check in the binary decoder in lib0, versions 0.2.1-0.2.117 and earlier and 1.0.0-rc.32 and earlier, lets any unauthenticated remote peer read adjacent process memory and receive it back. `readUint8Array` never compares the wire-supplied length against the decoder's own view, so one over-long length prefix returns whatever the host process allocated next: other tenants' document content, personal data, and live bearer session tokens**, recovered in full and at will. An attacker who can supply bytes to a lib0 decoder which means any peer that can open a socket, including before authentication reads adjacent process memory and, where the consumer echoes, stores or re-serves the decoded value, receives it back. This is patched in version 0.2.118 and 1.0.0-rc.33.","categories":["Unclassified"],"product":"lib0","vendor":"dmonad","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102360","source_modified_at":"2026-09-29T13:55:21.424Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"lib0","vendor":"dmonad","versions":[{"version":"<= 0.2.1-0.2.117","status":"affected"},{"version":"<= 1.0.0-rc.32","status":"affected"}],"defaultStatus":null}],"fixed_versions":[],"cvss":8.6,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00416,"percentile":0.34846,"score_date":"2026-10-23"},"published_at":"2026-09-29T13:11:55.735Z","modified_at":"2026-09-29T13:55:21.424Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-102360","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-29T13:55:21.424Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-102360","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/dmonad/lib0/security/advisories/GHSA-r5c8-rf4w-qrq8","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/dmonad/lib0/commit/425f28dc82c8df1b6f7e1ab20ea1a0a15a3c355f","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/dmonad/lib0/commit/c4c9db0b41346a33aff31a51f1f09c3a17757f10","tags":["x_refsource_MISC"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"yes","technical_impact":"partial","assessed_at":"2026-09-29T13:54:57.965828Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-09-29T13:55:21.424Z","content_hash":"b44741fe309f85780ee97742fcd7816e184d11280b85eb0dcac0479c334160c0"}}