{"id":"CVE-2019-15550","aliases":["EUVD-2021-1732","GHSA-gwfj-pw2x-h6c2","RUSTSEC-2019-0008"],"status":"published","title":"Out of bounds read in simd-json","description":"An issue was discovered in the simd-json crate before 0.1.15 for Rust. There is an out-of-bounds read and an incorrect crossing of a page boundary.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01398,"percentile":0.72642,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125"],"published":"2019-06-24T12:00:00Z","modified":"2026-10-24T10:30:42Z","fixes":[{"ecosystem":"crates.io","package":"simd-json","fixed_in":["0.1.15"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"crates.io","package":"simd-json","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.1.13"},{"fixed":"0.1.15"}]}]},{"source":"osv","ecosystem":"crates.io","package":"simd-json","ranges":[{"type":"SEMVER","events":[{"introduced":"0.1.13"},{"fixed":"0.1.15"}]}]},{"source":"osv","ecosystem":"crates.io","package":"simd-json","ranges":[{"type":"SEMVER","events":[{"introduced":"0.1.14-0"},{"fixed":"0.1.15"}]}]}],"products":[{"vendor":"simdjson_project","product":"simdjson"}],"references":[{"url":"https://rustsec.org/advisories/RUSTSEC-2019-0008.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-15550","tags":["advisory"]},{"url":"https://github.com/Licenser/simdjson-rs/pull/27","tags":["web"]},{"url":"https://github.com/advisories/GHSA-gwfj-pw2x-h6c2"},{"url":"https://github.com/Licenser/simdjson-rs","tags":["package"]},{"url":"https://crates.io/crates/simd-json","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2019-15550","description":"An issue was discovered in the simd-json crate before 0.1.15 for Rust. There is an out-of-bounds read and an incorrect crossing of a page boundary.","status":"published","published":"2019-08-26T14:31:38Z","modified":"2024-08-05T00:49:13.765Z","updated_at":"2026-11-02T14:20:21.059499Z"}],"euvd":[{"id":"EUVD-2021-1732","description":"An issue was discovered in the simd-json crate before 0.1.15 for Rust. There is an out-of-bounds read and an incorrect crossing of a page boundary.","status":"published","published":"2019-08-26T14:31:38Z","modified":"2024-08-05T00:49:13Z","updated_at":"2026-11-03T02:40:35.584574Z"}],"ghsa":[{"id":"GHSA-gwfj-pw2x-h6c2","title":"Out of bounds read in simd-json","description":"The affected version of this crate did not guard against accessing memory beyond the range of its input data. A pointer cast to read the data into a 256-bit register could lead to a segmentation fault when the end plus the 32 bytes (256 bit) read would overlap into the next page during string parsing. This allows an attacker to eventually crash a service. The flaw was corrected by using a padding buffer for the last read from the input. So that we are we never read over the boundary of the input data.","status":"published","published":"2021-08-25T20:43:56Z","modified":"2023-06-13T21:01:36Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:36:54.225318Z"}],"nvd":[{"id":"CVE-2019-15550","description":"An issue was discovered in the simd-json crate before 0.1.15 for Rust. There is an out-of-bounds read and an incorrect crossing of a page boundary.","status":"published","published":"2019-08-26T15:15:11.937Z","modified":"2026-06-17T02:20:36.923Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:05:23.725587Z"}],"osv":[{"id":"CVE-2019-15550","description":"An issue was discovered in the simd-json crate before 0.1.15 for Rust. There is an out-of-bounds read and an incorrect crossing of a page boundary.","status":"published","published":"2019-08-26T15:15:11.937Z","modified":"2026-10-24T10:30:42.682958801Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:11.361782Z"},{"id":"GHSA-gwfj-pw2x-h6c2","title":"Out of bounds read in simd-json","description":"The affected version of this crate did not guard against accessing memory beyond the range of its input data. A pointer cast to read the data into a 256-bit register could lead to a segmentation fault when the end plus the 32 bytes (256 bit) read would overlap into the next page during string parsing. This allows an attacker to eventually crash a service. The flaw was corrected by using a padding buffer for the last read from the input. So that we are we never read over the boundary of the input data.","status":"published","published":"2021-08-25T20:43:56Z","modified":"2023-11-08T04:01:14.10134Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:46:48.191583Z"},{"id":"RUSTSEC-2019-0008","title":"Flaw in string parsing can lead to crashes due to invalid memory access.","description":"The affected version of this crate did not guard against accessing memory\nbeyond the range of its input data. A pointer cast to read the data into\na 256-bit register could lead to a segmentation fault when the end plus\nthe 32 bytes (256 bit) read would overlap into the next page during string\nparsing.\n\n```\npage   |  ...  page 1  ...  | ... page 2  ... |\ndata   | x[n * 32 byte]xx__ |                 |\naccess | ..][ 32 byte ]     |                 |\nsegflt |               [ 32 | byte ]          |\n```\n\nThis allows an attacker to eventually crash a service.\n\nThe flaw was corrected by using a padding buffer for the last read from the\ninput. So that we are we never read over the boundary of the input data.","status":"published","published":"2019-06-24T12:00:00Z","modified":"2023-11-08T04:01:14.10134Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:39.492624Z"}]}}