# Duplicate Advisory: snappy-java: Heap buffer overflow in Snappy.uncompress*Array typed-array methods

Source: https://junglewise.ai/threats/duplicate-advisory-snappy-java-heap-buffer-overflow-in-snappy-3d5847b7  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-18  
License: CC BY 4.0 with a link back

Severity: medium · CVSS 6.5 · Published 2026-09-18

## Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-gwq9-9ffj-mvrv This link is maintained to preserve external references.

## Original 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.

Technologies: [org.xerial.snappy:snappy-java (Maven)](https://junglewise.ai/threats/technologies/org-xerial-snappy-snappy-java). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Medium severity, with a CVSS score of 6.5, published 18 September 2026.

**Which products and versions are affected?** org.xerial.snappy:snappy-java (Maven) <= 1.1.10.8, ECOSYSTEM:introduced=0,last_affected=1.1.10.8.

**Is there a fix for This vulnerability?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected?** Check whether you run org.xerial.snappy:snappy-java (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- org.xerial.snappy:snappy-java (Maven) <= 1.1.10.8, ECOSYSTEM:introduced=0,last_affected=1.1.10.8

## Related threats

- [snappy-java buffer overflow in arrayCopy](https://junglewise.ai/threats/cve-2026-116590-snappy-java-is-a-java-port-of-the-snappy-a-fast-c-compresser)
- [snappy-java unbounded memory allocation in decompression](https://junglewise.ai/threats/duplicate-advisory-snappy-java-unbounded-memory-allocation-from-ac3e5e8e)
- [Xerial snappy-java unbounded memory allocation](https://junglewise.ai/threats/cve-2026-108106-xerial-snappy-java-before-1-1-10-9-contains-an-unbounded-memory)
- [snappy-java buffer overflow in Snappy.uncompress*Array](https://junglewise.ai/threats/cve-2026-93451-snappy-java-buffer-overflow-in-snappy-uncompress-array)
- [snappy-java's missing upper bound check on chunk length can lead to Denial of Service (DoS) impact](https://junglewise.ai/threats/cve-2023-43642-snappy-java-s-missing-upper-bound-check-on-chunk-length-can-lead)