{"answers":{"affected":"1 open source package ship an affected version, including proc-macro-error2.","exploited":"There is no known exploitation of RUSTSEC-2026-0173 in the wild and no public exploit code.","fix":"No fix has been published for RUSTSEC-2026-0173 yet. Limit exposure of the affected software until one is available.","what":"RUSTSEC-2026-0173 is a vulnerability in proc-macro-error2, published on 7 Jun 2026."},"fix_prompt":"Check this codebase for RUSTSEC-2026-0173 and fix it if it is affected.\n\nWhat it is: RUSTSEC-2026-0173 is a vulnerability in proc-macro-error2, published on 7 Jun 2026. \nExploitation: There is no known exploitation of RUSTSEC-2026-0173 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- proc-macro-error2 (crates.io): affected from 0.0.0-0; no fix listed\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-2026-0173/ (Markdown: https://insights.sbomify.com/RUSTSEC-2026-0173/index.md)","id":"RUSTSEC-2026-0173","markdown":"https://insights.sbomify.com/RUSTSEC-2026-0173/index.md","name":"RUSTSEC-2026-0173","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["other"],"network_reachable":"unknown","non_default_config":false,"product_category":"Rust proc-macro library","requires_auth":"unknown","summary":"The proc-macro-error2 crate is unmaintained, posing supply chain risks; developers should migrate to maintained alternatives like manyhow.","user_interaction":"unknown","vuln_class":"supply_chain"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"The author of `proc-macro-error2` has [confirmed](https://github.com/GnomedDev/proc-macro-error-2/issues/17#issuecomment-4643215473) that the crate is no longer maintained and recommends that users migrate away from it.\n\n`proc-macro-error2` was originally created as a maintained fork of [`proc-macro-error`](https://crates.io/crates/proc-macro-error) (see [RUSTSEC-2024-0370](https://rustsec.org/advisories/RUSTSEC-2024-0370)). Both the original crate and this fork are now unmaintained.\n\n## Possible Alternative(s)\n\n- [manyhow](https://crates.io/crates/manyhow)\n- [proc-macro2-diagnostics](https://github.com/SergioBenitez/proc-macro2-diagnostics)","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":false,"headline":"proc-macro-error2 is unmaintained","id":"RUSTSEC-2026-0173","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"supply_chain","year":"2026"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"crates.io","fixed":[],"introduced":["0.0.0-0"],"last_affected":[],"package":"proc-macro-error2","purl":"pkg:cargo/proc-macro-error2","source":"RUSTSEC-2026-0173"}],"products":null,"published":"2026-06-07","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":"The proc-macro-error2 crate is unmaintained, posing supply chain risks; developers should migrate to maintained alternatives like manyhow.","url":"https://insights.sbomify.com/RUSTSEC-2026-0173/"}