{"id":"CVE-2026-102360","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-102360","generatedAt":"2026-10-28T01:11:38.854Z","title":"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…","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.","published":"2026-09-29T14:17:20.000Z","lastModified":"2026-09-30T19:38:27.000Z","status":"Awaiting Analysis","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":8.6,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N"},"cwe":["CWE-125"],"affected":[],"epss":{"score":0.00416,"percentile":0.35635,"date":"2026-10-26","history":[{"date":"2026-09-30","score":0.00416,"percentile":0.33503}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.42%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-29T14:17:20.000Z","detail":{"score":"8.6","severity":"HIGH","publishedAt":"2026-09-29T14:17:20.117Z"},"summary":"New CVE, high severity (CVSS 8.6)."}],"references":[{"url":"https://github.com/dmonad/lib0/commit/425f28dc82c8df1b6f7e1ab20ea1a0a15a3c355f","source":"security-advisories@github.com"},{"url":"https://github.com/dmonad/lib0/commit/c4c9db0b41346a33aff31a51f1f09c3a17757f10","source":"security-advisories@github.com"},{"url":"https://github.com/dmonad/lib0/security/advisories/GHSA-r5c8-rf4w-qrq8","source":"security-advisories@github.com"},{"url":"https://github.com/dmonad/lib0/security/advisories/GHSA-r5c8-rf4w-qrq8","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-102360","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}