Out-of-bounds Read in Dmonad Lib0
CVE-2026-102521
The 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.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Dmonad Lib0 — versions <= 0.2.118
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-102521?
- CVE-2026-102521 is a high-severity vulnerability in Dmonad Lib0, classified under Out-of-bounds Read. CVSS score: 8.6/10. Published 2026-09-29.
- How severe is CVE-2026-102521?
- High severity. CVSS v3 base score is 8.6 out of 10.