CVE-2026-102360
HighCVSS 8.6Exploitation Probability (EPSS)
Low risk34th percentile - higher than 34% of all known CVEs
Summary
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.
Risk Assessment
An attacker could access sensitive data belonging to other users or tenants, including session tokens, potentially leading to account takeover and further attacks.
Recommendation
Update lib0 to version 0.2.118 or 1.0.0-rc.33 to fix the missing bounds check in the binary decoder.
Other vulnerabilities in lib0
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS