Answer in brief
CVE-2026-87877 records a Unknown severity vulnerability in zstd-jni 1.3.8-4 through 1.5.7-13 Use-After-Free via Setters Called After close(). 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.
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.
The current feed maps luben/zstd-jni (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| luben/zstd-jnigeneric | >=1.3.8-4 <1.5.7-14 | 1.5.7-14 |
Published upstream
Sep 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 9, 2026
zstd-jni versions before 1.5.7-14 fail to validate closed state in setDict, setLongMax, setLevel and setRefMultipleDDicts methods of stream classes. Attackers can call these methods on closed streams to write through freed native pointers, corrupting unrelated objects or crashing the JVM.
Quoted source text, attributed separately from HOL analysis.