Buffer overflow in Xerial Snappy-Java
CVE-2026-93451
snappy-java through 1.1.10.8 contains a buffer overflow vulnerability in typed Snappy.uncompress*Array methods that allocate output arrays by dividing uncompressed length by element size but pass the undivided length to native code. Attackers controlling compressed input can cause misaligned length values to write past array bounds with attacker-controlled bytes, corrupting heap memory.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (22.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.003 · change: -0.002
Affected products
Weakness classification (CWE)
References
- github.com/xerial/snappy-java/issues/729 (issue-tracking)
- github.com/xerial/snappy-java/blob/v1.1.10.8/src/main/java/org/xerial/snappy/Sn… (technical-description)
- github.com/xerial/snappy-java (product)
- www.vulncheck.com/advisories/snappy-java-through-1.1.10.8-buffer-overflow-via-t… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-93451?
- CVE-2026-93451 is a medium-severity vulnerability in Xerial Snappy-Java, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2026-09-18.
- How severe is CVE-2026-93451?
- Medium severity. CVSS v3 base score is 6.5 out of 10.