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Starting with version 1.7.0 and prior to versions 1.18.4, 1.20.3, and 1.23.1, when configuring a Windows named pipe server, setting `pipe_mode` will reset `reject_remote_clients` to `false`. If the application has previously configured `reject_remote_clients` to `true`, this effectively undoes the configuration. Remote clients may only access the named pipe if the named pipe's associated path is accessible via a publicly shared folder (SMB). Versions 1.23.1, 1.20.3, and 1.18.4 have been patched. The fix will also be present in all releases starting from version 1.24.0. Named pipes were introduced to Tokio in version 1.7.0, so releases older than 1.7.0 are not affected. 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issue was discovered in the tokio crate before 1.8.1 for Rust. Upon a JoinHandle::abort, a Task may be dropped in the wrong thread.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-38191","reference_id":"","reference_type":"","scores":[{"value":"0.00341","scoring_system":"epss","scoring_elements":"0.57106","published_at":"2026-06-09T12:55:00Z"},{"value":"0.00341","scoring_system":"epss","scoring_elements":"0.57087","published_at":"2026-06-08T12:55:00Z"},{"value":"0.00341","scoring_system":"epss","scoring_elements":"0.57102","published_at":"2026-06-07T12:55:00Z"},{"value":"0.00341","scoring_system":"epss","scoring_elements":"0.57054","published_at":"2026-06-04T12:55:00Z"},{"value":"0.00341","scoring_system":"epss","scoring_elements":"0.57114","published_at":"2026-06-06T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-38191"},{"reference_url":"https://github.com/tokio-rs/tokio","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/tokio-rs/tokio"},{"reference_url":"https://github.com/tokio-rs/tokio/issues/3929","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/tokio-rs/tokio/issues/3929"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-38191","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-38191"},{"reference_url":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/tokio/RUSTSEC-2021-0072.md","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/tokio/RUSTSEC-2021-0072.md"},{"reference_url":"https://rustsec.org/advisories/RUSTSEC-2021-0072.html","reference_id":"","reference_type":"","scores":[{"value":"5.9","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://rustsec.org/advisories/RUSTSEC-2021-0072.html"},{"reference_url":"https://github.com/advisories/GHSA-2grh-hm3w-w7hv","reference_id":"GHSA-2grh-hm3w-w7hv","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-2grh-hm3w-w7hv"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/128227?format=json","purl":"pkg:deb/debian/rust-tokio@0?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/rust-tokio@0%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/128228?format=json","purl":"pkg:deb/debian/rust-tokio@0.1.14-2?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-6x39-4m4f-hqax"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/rust-tokio@0.1.14-2%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/128226?format=json","purl":"pkg:deb/debian/rust-tokio@1.24.2-1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/rust-tokio@1.24.2-1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/128230?format=json","purl":"pkg:deb/debian/rust-tokio@1.43.1-1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/rust-tokio@1.43.1-1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/128229?format=json","purl":"pkg:deb/debian/rust-tokio@1.52.3-1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/rust-tokio@1.52.3-1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/1159028?format=json","purl":"pkg:deb/debian/rust-tokio@1.52.3-2?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/rust-tokio@1.52.3-2%3Fdistro=trixie"}],"aliases":["CVE-2021-38191","GHSA-2grh-hm3w-w7hv"],"risk_score":3.1,"exploitability":"0.5","weighted_severity":"6.2","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-tf1k-yfez-1fhk"}],"risk_score":null,"resource_url":"http://public2.vulne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