Out of bounds read in simd-json

published 2019-06-24 7y ago modified 2026-06-17 4mo ago also GHSA-gwfj-pw2x-h6c2 , RUSTSEC-2019-0008 , EUVD-2021-1732

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.4%; EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits: 0; none known

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.

Patch / fix

fixed in 2 links 1

crates.io simd-json 0.1.15
simdjson_project simdjson 0.1.15

github.com/Licenser/simdjson-rs#27 pull request

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Exploit prediction

1.40% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P
OSV	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem	package	affected	fixed in
crates.io	simd-json	>=0.1.13, <0.1.15 >=0.1.14-0, <0.1.15	0.1.15

Classification

Weakness

CWE-125 Out-of-bounds Read

References

github.com /Licenser/simdjson-rs/pull/27
web
rustsec.org /advisories/RUSTSEC-2019-0008.html
web, third-party-advisory, advisory
nvd.nist.gov /vuln/detail/CVE-2019-15550
advisory
github.com /Licenser/simdjson-rs
package
crates.io /crates/simd-json
package

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.