CVE-2026-90852 Details
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.
A use-after-free vulnerability has been identified in luben zstd-jni versions through 1.5.7-13, specifically within the Dictionary Sharing component. The issue arises in the ZstdCompressCtx.loadDict function, located in ZstdCompressCtx.java. This vulnerability allows for remote exploitation by manipulating dictionary objects, leading to the dereferencing of freed memory. The problem has been publicly disclosed and can be exploited by controlling the timing of dictionary lifecycle events.
Users should upgrade to zstd-jni version 1.5.7-14 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 15, 2026CISA-ADP
Assessed Sep 15, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/luben/zstd-jni/ | [email protected] | Vendor |
| https://github.com/luben/zstd-jni/commit/a560131d7834598afd9cea6b7c107bc88e915936 | [email protected] | Source CodeVendor |
| https://github.com/luben/zstd-jni/issues/404 | [email protected] | ExploitIssue TrackingTechnical AnalysisVendor |
| https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14 | [email protected] | Release NotesVendor |
| https://vuldb.com/cve/CVE-2026-90852 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/927022 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/403407 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/403407/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-416 | Use After Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| luben zstd-jni | <= 1.5.7-13 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 15, 2026 | CVE Modified | CISA-ADP |
| Sep 15, 2026 | New CVE Received | [email protected] |