CVE-2026-87795 (GCVE-0-2026-87795)
Vulnerability from cvelistv5 – Published: 2026-09-09 10:07 – Updated: 2026-09-14 13:02
VLAI
EPSS
VEX
Title
zstd-jni 1.2.0 through 1.5.7-13 Out-of-Bounds Read via ZstdDictCompress
Summary
zstd-jni versions before 1.5.7-14 fail to validate offset and length parameters in the ZstdDictCompress constructor, allowing out-of-bounds memory reads. Attackers can supply untrusted offset or length values to read native heap memory into the compression dictionary, typically causing JVM crashes.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 13:02 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/luben/zstd-jni/security/adviso… | vendor-advisory |
| https://github.com/luben/zstd-jni/commit/0d64de4d… | patch |
| https://github.com/luben/zstd-jni/blob/v1.5.7-13/… | technical-description |
| https://github.com/luben/zstd-jni/blob/v1.5.7-13/… | technical-description |
| https://github.com/luben/zstd-jni/commit/1c4e5a6c… | technical-descriptionpatch |
| https://github.com/luben/zstd-jni/releases/tag/v1… | release-notes |
| https://github.com/luben/zstd-jni | product |
| https://www.vulncheck.com/advisories/zstd-jni-1.2… | third-party-advisory |
Impacted products
Date Public
2026-08-15 00:00
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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