{"id":"RUSTSEC-2026-0257","revision":"a666dee7afa442e18e93b782587e5d98","records":[{"revision":"a666dee7afa442e18e93b782587e5d98","observedAt":"2026-10-24T13:19:54.901+00:00","statement":{"source":"osv","id":"RUSTSEC-2026-0257","aliases":["GHSA-2ph8-5cr8-hr33"],"title":"Unix `BROWSER` handling allows browser argument injection","description":"On Unix platforms handled by `src/unix.rs`, affected versions substitute the\ncaller-supplied URL into the `BROWSER` environment-variable template before\ntokenizing the resulting string with `split_ascii_whitespace()`. If an\napplication passes an attacker-controlled non-HTTP(S) URL whose parsed form\nretains spaces and the effective `BROWSER` template contains `%s`, text that\nshould remain within one URL argument becomes additional browser arguments.\n\nThe issue was reproduced with Chromium by injecting\n`--remote-debugging-port`, which exposed a local DevTools endpoint, and\n`--proxy-server`, which redirected browser traffic through an\nattacker-controlled proxy. The available arguments and resulting impact depend\non the browser launched by the affected application.\n\nVersion 1.2.2 fixes the issue by tokenizing the `BROWSER` template before\nsubstituting the URL, preserving the URL as part of a single argument. Users\nshould upgrade to version 1.2.2 or later. Applications that only need HTTP(S)\nURLs can also enable the crate's `hardened` feature as defense in depth.\n\nThis issue was reported by\n[@dywzju09-blip](https://github.com/dywzju09-blip).","state":0,"publishedAt":"2026-07-29T12:00:00+00:00","modifiedAt":"2026-10-12T18:00:10.9387492+00:00","affected":[{"ecosystem":"crates.io","name":"webbrowser","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.0.0-0"},{"kind":"fixed","version":"1.2.2"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://crates.io/crates/webbrowser","https://rustsec.org/advisories/RUSTSEC-2026-0257.html","https://github.com/amodm/webbrowser-rs/commit/31d1b924885551c0e553909d27c738ca6958a0f3","https://github.com/amodm/webbrowser-rs/releases/tag/v1.2.2"],"sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2026-0257","license":"OSV · upstream source license applies","key":"osv:RUSTSEC-2026-0257","identifiers":["RUSTSEC-2026-0257","GHSA-2ph8-5cr8-hr33"]},"retained":false,"historicalAffected":[]}],"coverage":[]}