CVE-2019-25005

7.5 highEPSS 1.3%

An issue was discovered in the chacha20 crate before 0.2.3 for Rust. A ChaCha20 counter overflow makes it easier for attackers to determine plaintext.

Severity

CVSS 3.1

7.5 high

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

EPSS: 1.3% chance of exploitation in the next 30 days; higher than 70% of CVEs (scores of 2026-10-31)
CWE: CWE-190
Published: 2020-12-31
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

chacha20_project:chacha20

Packages (OSV)

Advisory	Ecosystem	Package	Affected	Fixed in
GHSA-j2r6-2m5c-vgh5	crates.io	chacha20	<0.2.3	0.2.3
RUSTSEC-2019-0029	crates.io	chacha20	>=0.0.0-0 <0.2.3	0.2.3

References

https://rustsec.org/advisories/RUSTSEC-2019-0029.html
https://rustsec.org/advisories/RUSTSEC-2019-0029.html

Check your stack JSON