CVE-2026-102521CWE-125

CVE-2026-102521

High · published September 29, 2026

CVSS v3.1
8.6
EPSS
0%
Percentile
16.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00260 · 16.7th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-09-29T18:17Z
References (2)
https://github.com/dmonad/lib0/commit/49383f2716283b90059dbfe01e110c0ab7ef5592 · [email protected]https://github.com/dmonad/lib0/security/advisories/GHSA-g75x-89c3-rvmr · [email protected]
EPSS history
Timeline
  • 01 OCT 03:44Z
    EPSS moved — → 0%
    epss
  • 29 SEP 13:14Z
    lib0 `readFromDataView` out-of-bounds read
    cvelistv5