{"answers":{"affected":"1 open source package ship an affected version, including zstd-safe.","exploited":"There is no known exploitation of RUSTSEC-2026-0404 in the wild and no public exploit code.","fix":"Upgrade zstd-safe to 8.2.0 or later.","what":"RUSTSEC-2026-0404 is a vulnerability in zstd-safe, published on 16 Oct 2026."},"fix_prompt":"Check this codebase for RUSTSEC-2026-0404 and fix it if it is affected.\n\nWhat it is: RUSTSEC-2026-0404 is a vulnerability in zstd-safe, published on 16 Oct 2026. \nExploitation: There is no known exploitation of RUSTSEC-2026-0404 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- zstd-safe (crates.io): affected from 4.1.4; 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-2026-0404/ (Markdown: https://insights.sbomify.com/RUSTSEC-2026-0404/index.md)","id":"RUSTSEC-2026-0404","markdown":"https://insights.sbomify.com/RUSTSEC-2026-0404/index.md","name":"RUSTSEC-2026-0404","record":{"aliases":[],"analysis":null,"analysis_generated_by":null,"assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"`DCtx::try_clone` (`experimental` feature, deprecated) is a plain copy of the\nC context. A context owning a dictionary (from `load_dictionary`,\n`ref_prefix` or `init_using_dict`) or a dictionary table (`ref_ddict` with\n`RefMultipleDDicts`) ended up with both copies freeing it. A context cloned\nmid-frame resumed on uninitialized stream state. The clone also silently lost\nthe `WindowLogMax` limit.\n\nThe flaw was corrected by refusing to clone such contexts, and by carrying\nover the parameters the copy leaves out.","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":"Double free in `DCtx::try_clone`","id":"RUSTSEC-2026-0404","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":["4.1.4"],"last_affected":[],"package":"zstd-safe","purl":"pkg:cargo/zstd-safe","source":"RUSTSEC-2026-0404"}],"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-2026-0404/"}