Integer underflow in untrusted

published 2018-06-21 8y ago modified 2026-06-17 4mo ago also GHSA-wq8f-46ww-6c2h , RUSTSEC-2018-0001 , EUVD-2021-1919

cvss: 7.5; version 3.0, 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 untrusted crate before 0.6.2 for Rust. Error handling can trigger an integer underflow and panic.

Patch / fix

fixed in 2 links 1

crates.io untrusted 0.6.2
untrusted_project untrusted 0.6.2

github.com/briansmith/untrusted#20 pull request

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Exploit prediction

1.41% 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	3.0	7.5	CVSS:3.0/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
GitHub	3.0	7.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV	3.0	7.5	CVSS:3.0/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	untrusted	<0.6.2 >=0.0.0-0, <0.6.2	0.6.2

Classification

Weakness

CWE-191 Integer Underflow (Wrap or Wraparound)

References

github.com /briansmith/untrusted/pull/20
web
rustsec.org /advisories/RUSTSEC-2018-0001.html
web, third-party-advisory, advisory
nvd.nist.gov /vuln/detail/CVE-2018-20989
advisory
github.com /briansmith/untrusted
package
crates.io /crates/untrusted
package

Sources

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