luben zstd-jni Dictionary Sharing ZstdCompressCtx.java ZstdCompressCtx.loadDict use after free (CVE-2026-90852) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90852

luben zstd-jni Dictionary Sharing ZstdCompressCtx.java ZstdCompressCtx.loadDict use after free

Answer in brief

CVE-2026-90852 records a Unknown severity vulnerability in luben zstd-jni Dictionary Sharing ZstdCompressCtx.java ZstdCompressCtx.loadDict use after free. The current sources do not mark it as known exploited. The current feed maps luben/zstd-jni (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 15, 2026Updated Sep 15, 2026Source checked Sep 15, 2026First seen by HOL Sep 15, 2026Material review Sep 15, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps luben/zstd-jni (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
luben/zstd-jnigeneric	1.5.7-13	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for luben/zstd-jni.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 15, 2026

Sources and claim methodology

Upstream source description

A vulnerability has been found in luben zstd-jni up to 1.5.7-13. This vulnerability affects the function ZstdCompressCtx.loadDict of the file ZstdCompressCtx.java of the component Dictionary Sharing. Such manipulation leads to use after free. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.5.7-14 is able to resolve this issue. The name of the patch is a560131d7834598afd9cea6b7c107bc88e915936. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Quoted source text, attributed separately from HOL analysis.