Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Versions 4.0.0 up to but not including 7.4.0, and 8.0.0 up to but not including 8.2.0, of the zstd-safe crate are affected. When streaming decompression of a corrupt legacy zstd frame fails, the output buffer can be extended over uninitialized memory, so up to 32 KiB of stale heap contents may be passed on to the application's output. Whether an attacker can read this depends on where the application sends its decompressed output. Upgrade to zstd-safe 7.4.0 or 8.2.0.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
No source has published a CVSS score for this record yet.
- CISA KEV Not listed.
- EPSS No score.
Timeline
- 31 Oct 2026, 14:24 UTC First seen by agentprime
- 31 Oct 2026, 14:24 UTC Confirmed by OSV