{"id":"CVE-2026-102360","revision":"2fcc8d0c782e4a3e9e353a7597f0d643","records":[{"revision":"2fcc8d0c782e4a3e9e353a7597f0d643","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-102360","aliases":[],"title":"lib0 `readUint8Array` performs an unbounded read past the end of the decoder’s view, disclosing adjacent process memory","description":"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.","state":0,"publishedAt":"2026-09-29T13:11:55.735+00:00","modifiedAt":"2026-09-29T13:55:21.424+00:00","affected":[{"ecosystem":"Vendor product","name":"lib0","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"dmonad\",\n                    \"product\": \"lib0\",\n                    \"versions\": [\n                        {\n                            \"version\": \"<= 0.2.1-0.2.117\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"<= 1.0.0-rc.32\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","score":8.6,"severity":"HIGH"}],"references":["https://github.com/dmonad/lib0/security/advisories/GHSA-r5c8-rf4w-qrq8","https://github.com/dmonad/lib0/commit/425f28dc82c8df1b6f7e1ab20ea1a0a15a3c355f","https://github.com/dmonad/lib0/commit/c4c9db0b41346a33aff31a51f1f09c3a17757f10"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-102360","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-102360","identifiers":["CVE-2026-102360"]},"retained":false,"historicalAffected":[]}],"coverage":[]}