TI-2019-12130 Aliases CVE-2019-16143 GHSA-4x25-pvhw-5224

An issue was discovered in the blake2 crate before 0.8.1 for Rust.

MEDIUM 44CWE-327Published 2019-09-09 · Updated 2024-08-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-327.

Summary

An issue was discovered in the blake2 crate before 0.8.1 for Rust. The BLAKE2b and BLAKE2s algorithms, when used with HMAC, produce incorrect results because the block sizes are half of the required sizes.

Why it matters now

EPSS 0.00933 60th percentileScored 2026-11-07

Fix Fixed blake2 (crates.io): 0.8.1

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA
—	blake2 (crates.io)	before 0.8.1	0.8.1	Patch available	GHSA-4x25-pvhw-5224

— Vendor— Affected all versions Fixed in — No fix listed CNA
blake2 (crates.io) Vendor— Affected before 0.8.1 Fixed in 0.8.1 Patch available GHSA-4x25-pvhw-5224

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:blake2:blake2-rust::::::::	before 0.8.1	Vulnerable	Blake2

cpe:2.3:a:blake2:blake2-rust:*:*:*:*:*:*:*:* Versions before 0.8.1 Vulnerable ·Blake2

Remediation

Fix · GHSA-4x25-pvhw-5224 blake2 (crates.io) Fixed in 0.8.1 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2019-16143
2026-10-03 Alias added: GHSA-4x25-pvhw-5224

References

Advisory 2

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences