CVE-2026-90559
snappy-java through 1.1.10.8 Out-of-Bounds Write via uncompress
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
snappy-java through 1.1.10.8 contains an out-of-bounds write vulnerability in Snappy.uncompress(ByteBuffer, ByteBuffer) because destination buffer capacity is never validated against decompressed size. Attackers can supply valid compressed data that decompresses larger than the destination buffer, causing writes past buffer boundaries and JVM termination.
| CWE | CWE-787 |
| Vendor | xerial |
| Product | snappy-java |
| Published | Sep 12, 2026 |
| Last Updated | Sep 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
xerial / snappy-java
0 ≤ 1.1.10.8
References
github.com: https://github.com/xerial/snappy-java/issues/728 github.com: https://github.com/xerial/snappy-java github.com: https://github.com/xerial/snappy-java/blob/v1.1.10.8/src/main/java/org/xerial/snappy/Snappy.java#L561 vulncheck.com: https://www.vulncheck.com/advisories/snappy-java-through-1.1.10.8-out-of-bounds-write-via-uncompress
Credits
Yu Bao, PayPal Cyber Security Team