lib0 `readFromDataView` out-of-bounds read

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-102521
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-29 14:17:20 UTC
Updated2026-09-30 21:17:04 UTC
DescriptionThe decoder in `readFromDataView` in lib0 before 0.2.119 can be tricked into reading more than it should from a buffer. The vulnerability allows reading past the decoders' view, thus exposing adjacent process memory. This can be anything that is currently in the head, for example credentials or logs. This is similar to but different from GHSA-r5c8-rf4w-qrq8.

Risk And Classification

Primary CVSS: v3.1 8.6 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Problem Types: CWE-125 | CWE-125 CWE-125: Out-of-bounds Read

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
3.1CNADECLARED8.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Dmonad Lib0 affected <= 0.2.118 Not specified

References

ReferenceSourceLinkTags
github.com/dmonad/lib0/security/advisories/GHSA-g75x-89c3-rvmr [email protected] github.com
github.com/dmonad/lib0/commit/49383f2716283b90059dbfe01e110c0ab7ef5592 [email protected] github.com
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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