CVE-2021-29940

CRITICAL 9.8CVE-2021-29940 · Published 01/04/2021 · updated 17/06/2026

In short

CVE-2021-29940 is a CRITICAL (CVSS 9.8) vulnerability affecting through (through project).
Chance of exploitation in the next 30 days (EPSS): 1.4%, higher than 72.2% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
through through_project	`≤ 2021-02-18`	No fix yet

Description

An issue was discovered in the through crate through 2021-02-18 for Rust. There is a double free (in through and through_and) upon a panic of the map function.

References

rustsec.org/advisories/RUSTSEC-2021-0049.html · Exploit

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