{"id":"RUSTSEC-2026-0173","aliases":[],"status":"published","title":"proc-macro-error2 is unmaintained","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has [confirmed](https://github.com/GnomedDev/proc-macro-error-2/issues/17#issuecomment-4643215473) that the crate is no longer maintained and recommends that users migrate away from it.\n\n`proc-macro-error2` was originally created as a maintained fork of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)","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2026-06-07T12:00:00Z","modified":"2026-06-07T21:00:04Z","affected":[{"source":"osv","ecosystem":"crates.io","package":"proc-macro-error2","ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"}]}]}],"references":[{"url":"https://crates.io/crates/proc-macro-error2","tags":["package"]},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0173.html","tags":["advisory"]},{"url":"https://github.com/GnomedDev/proc-macro-error-2/issues/17","tags":["report"]}],"sources":{"osv":[{"id":"RUSTSEC-2026-0173","title":"proc-macro-error2 is unmaintained","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has [confirmed](https://github.com/GnomedDev/proc-macro-error-2/issues/17#issuecomment-4643215473) that the crate is no longer maintained and recommends that users migrate away from it.\n\n`proc-macro-error2` was originally created as a maintained fork of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)","status":"published","published":"2026-06-07T12:00:00Z","modified":"2026-06-07T21:00:04.318567692Z","updated_at":"2026-11-02T15:53:40.430679Z"}]}}