{"answers":{"affected":"1 open source package ship an affected version, including zstd-safe.","exploited":"There is no known exploitation of RUSTSEC-2026-0398 in the wild and no public exploit code.","fix":"Upgrade zstd-safe to 8.2.0 or later.","what":"RUSTSEC-2026-0398 is a vulnerability in zstd-safe, published on 16 Oct 2026."},"fix_prompt":"Check this codebase for RUSTSEC-2026-0398 and fix it if it is affected.\n\nWhat it is: RUSTSEC-2026-0398 is a vulnerability in zstd-safe, published on 16 Oct 2026. \nExploitation: There is no known exploitation of RUSTSEC-2026-0398 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- zstd-safe (crates.io): affected from 7.2.2; fixed in 8.2.0\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/RUSTSEC-2026-0398/ (Markdown: https://insights.sbomify.com/RUSTSEC-2026-0398/index.md)","id":"RUSTSEC-2026-0398","markdown":"https://insights.sbomify.com/RUSTSEC-2026-0398/index.md","name":"RUSTSEC-2026-0398","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"`ZSTD_seekable_decompress` shortens the requested length to the end of the\ndata without checking that the offset is before it. For an offset past the\nend, it returns a wrapped-around length without writing anything, and\n`Seekable::decompress` passed that length to `Vec::set_len`.\n\nWith the `seekable` feature, whoever supplies the archive, or chooses the\noffset, can leave the caller's `Vec\u003cu8\u003e` with a length far beyond its\ncapacity. Reading it then discloses neighbouring heap memory, and appending\nto it corrupts memory. Offsets near `u64::MAX` can also hang the call.\n\nThe flaw was corrected by clamping requests to the end of the data, and by\nchecking every count reported by the C library against the buffer capacity.","ecosystems":["crates.io"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":true,"headline":"`Seekable::decompress` sets a `Vec` length beyond its capacity for offsets past the end","id":"RUSTSEC-2026-0398","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"crates.io","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"crates.io","fixed":["8.2.0"],"introduced":["7.2.2"],"last_affected":[],"package":"zstd-safe","purl":"pkg:cargo/zstd-safe","source":"RUSTSEC-2026-0398"}],"products":null,"published":"2026-10-16","related":[],"sources":[{"class":"open","licence":"CC0 1.0","name":"RustSec","prefix":"RUSTSEC"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":null,"url":"https://insights.sbomify.com/RUSTSEC-2026-0398/"}