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CVE-2023-42447 — Vulnerability in blurhash — CVE Details

HIGH

blurhash panics on parsing crafted inputs

Published September 21, 2023Updated March 16, 2026Source: osv

Summary

### Impact The blurhash parsing code may panic due to multiple panic-guarded out-of-bounds accesses on untrusted input. In a typical deployment, this may get triggered by feeding a maliciously crafted blurhashes over the network. These may include: - UTF-8 compliant strings containing multi-byte UTF-8 characters ### Patches The patches will be released under version 0.2.0, which requires user intervention because of slight API churn. ### Workarounds n.a. ### References n.a.

Advisory Timeline

  • First published September 21, 2023 (1117 days ago).
  • Last revised March 16, 2026 — 906 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Cargo
Update blurhash to 0.2.0 or later
cargo update -p blurhash --precise 0.2.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: crates.io (1).

PackageEcosystemAffectedFixed In
blurhash
crates.io
0.1.10.2.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 8.6 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High

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

References

Frequently Asked Questions

What is CVE-2023-42447?
blurhash panics on parsing crafted inputs This vulnerability has been assigned a severity rating of HIGH (CVSS score: 8.6/10).
How do I check if my project is affected by CVE-2023-42447?
CVE-2023-42447 affects blurhash. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2023-42447 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
8.6

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-cxvp-82cq-57h2
RUSTSEC-2023-0083

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