CVE-2025-11579: rardecode: DoS risk due to unrestricted RAR dictionary sizes

October 10, 2025 (updated October 11, 2025)

rardecode versions <= 2.1.1 fail to restrict the dictionary size when reading large RAR dictionary sizes, which allows an attacker to provide a specially crafted RAR file and cause Denial of Service via an Out Of Memory Crash.

References

github.com/advisories/GHSA-rwvp-r38j-9rgg
github.com/nwaples/rardecode
github.com/nwaples/rardecode/commit/52fb4e825c936636f251f7e7deded39ab11df9a9
nvd.nist.gov/vuln/detail/CVE-2025-11579

Code Behaviors & Features

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