CVE-2020-36317

7.5 highEPSS 1.5%

High (7.5) in rust-lang rust. EPSS 1.5% chance of exploitation in the next 30 days.

In the standard library in Rust before 1.49.0, String::retain() function has a panic safety problem. It allows creation of a non-UTF-8 Rust string when the provided closure panics. This bug could result in a memory safety violation when other string APIs assume that UTF-8 encoding is used on the same string.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 1.5% chance of exploitation in the next 30 days; higher than 74% of CVEs (scores of 2026-11-01)
CWE: CWE-787
Published: 2021-04-11
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

rust-lang:rust

References

https://github.com/rust-lang/rust/issues/78498
https://github.com/rust-lang/rust/pull/78499
https://github.com/rust-lang/rust/issues/78498
https://github.com/rust-lang/rust/pull/78499

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