luben zstd-jni up to 1.5.7-13 Dictionary Sharing ZstdCompressCtx.java ZstdCompressCtx.loadDict use after free

Summaryinfo

A vulnerability marked as critical has been reported in luben zstd-jni up to 1.5.7-13. This issue affects the function ZstdCompressCtx.loadDict of the file ZstdCompressCtx.java of the component Dictionary Sharing. Performing a manipulation results in use after free. This vulnerability is reported as CVE-2026-90852. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is suggested to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Detailsinfo

A vulnerability classified as critical has been found in luben zstd-jni up to 1.5.7-13. This affects the function ZstdCompressCtx.loadDict of the file ZstdCompressCtx.java of the component Dictionary Sharing. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-90852. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

The exploit is shared for download at github.com. It is declared as proof-of-concept. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Upgrading to version 1.5.7-14 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch a560131d7834598afd9cea6b7c107bc88e915936 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• luben

Name

• zstd-jni

Version

• 1.5.7-13

License

• open-source

Website

• Product: https://github.com/luben/zstd-jni/

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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Submitinfo

Accepted

• Submit #927022: luben zstd-jni 1.5.7-13 Cross-Object Use-After-Free (by Yu Bao from PayPal Cyber Security Team)

Be aware that VulDB is the high quality source for vulnerability data.

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