What’s Vulnerable › Vulnerabilities

CVE-2026-102521: lib0 `readFromDataView` out-of-bounds read

• Severity: high (CVSS 8.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-29 · updated 2026-09-30
• Weakness: CWE-125

Description

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.

Affected products

• dmonad lib0: through 0.2.118

References

• https://github.com/dmonad/lib0/commit/49383f2716283b90059dbfe01e110c0ab7ef5592
• https://github.com/dmonad/lib0/security/advisories/GHSA-g75x-89c3-rvmr

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