{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-102360", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-09-28T22:38:42.255Z", "datePublished": "2026-09-29T13:11:55.735Z", "dateUpdated": "2026-09-29T13:11:55.735Z"}, "containers": {"cna": {"title": "lib0 `readUint8Array` performs an unbounded read past the end of the decoder\u2019s view, disclosing adjacent process memory", "problemTypes": [{"descriptions": [{"cweId": "CWE-125", "lang": "en", "description": "CWE-125: Out-of-bounds Read", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/dmonad/lib0/security/advisories/GHSA-r5c8-rf4w-qrq8", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/dmonad/lib0/security/advisories/GHSA-r5c8-rf4w-qrq8"}, {"name": "https://github.com/dmonad/lib0/commit/425f28dc82c8df1b6f7e1ab20ea1a0a15a3c355f", "tags": ["x_refsource_MISC"], "url": "https://github.com/dmonad/lib0/commit/425f28dc82c8df1b6f7e1ab20ea1a0a15a3c355f"}, {"name": "https://github.com/dmonad/lib0/commit/c4c9db0b41346a33aff31a51f1f09c3a17757f10", "tags": ["x_refsource_MISC"], "url": "https://github.com/dmonad/lib0/commit/c4c9db0b41346a33aff31a51f1f09c3a17757f10"}], "affected": [{"vendor": "dmonad", "product": "lib0", "versions": [{"version": "<= 0.2.1-0.2.117", "status": "affected"}, {"version": "<= 1.0.0-rc.32", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-29T13:11:55.735Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-r5c8-rf4w-qrq8", "discovery": "UNKNOWN"}}}}

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