VULNRABLE / Vulnerability / CVE-2026-63209
CVE-2026-63209
HIGH LOW github.com/klauspost/compress GHSA
Exploit verdict: No active-exploit signal
CVSS Score
8
Severity
HIGH
EPSS
0%
Source
GHSA
Summary
Compress/s2: Integer Overflow or Wraparound and Out-of-bounds Write in compress
What this means
CVE-2026-63209 is a high-severity vulnerability affecting github.com/klauspost/compress, rated CVSS 8. The EPSS model estimates a 0% probability of exploitation in the next 30 days. Published October 20, 2026.
View full advisory at GHSA →