Answer in brief
CVE-2023-42447 records a High severity (CVSS 8.6) vulnerability in blurhash: panic on parsing crafted blurhash inputs. The current sources do not mark it as known exploited. The current feed maps blurhash (crates.io). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps blurhash (crates.io). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| blurhashcrates.io | >=0.0.0-0 <0.2.0 | 0.2.0 |
Published upstream
Sep 19, 2023
Evidence: source:osv:source_dates:source-dates:recordSource modified
Oct 12, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Oct 12, 2026
## 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 were released under version 0.2.0, which may require user intervention because of slight API churn.
Quoted source text, attributed separately from HOL analysis.