How severe is CVE-2023-42447?

CVE-2023-42447 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-42447 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-42447?

CVE-2023-42447 affects Whisperfish Blurhash-rs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-42447?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-42447 published?

CVE-2023-42447 was published on 2023-09-19 and last updated on 2026-06-17.

CVE-2023-42447

CVE-2023-42447 is a high-severity vulnerability in Whisperfish Blurhash-rs with a CVSS 3.x base score of 8.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1284.

Key facts

Severity: High (CVSS 3.x base score 8.6)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1284
Affected product: Whisperfish Blurhash-rs
Published: 2023-09-19
Last modified: 2026-06-17

Description

blurhash-rs is a pure Rust implementation of Blurhash, software for encoding images into ASCII strings that can be turned into a gradient of colors representing the original image. In version 0.1.1, 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. A patch is available in version 0.2.0, which requires user intervention because of slight API churn. No known workarounds are available.

Frequently asked questions

What is CVE-2023-42447?: blurhash-rs is a pure Rust implementation of Blurhash, software for encoding images into ASCII strings that can be turned into a gradient of colors representing the original image. In version 0.1.1, 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. A patch is available in version 0.2.0, which requires user intervention because of slight API churn. No known workarounds are available.
How severe is CVE-2023-42447?: CVE-2023-42447 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-42447 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-42447?: CVE-2023-42447 affects Whisperfish Blurhash-rs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-42447?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-42447 published?: CVE-2023-42447 was published on 2023-09-19 and last updated on 2026-06-17.

References

https://github.com/whisperfish/blurhash-rs/security/advisories/GHSA-cxvp-82cq-57h2

Affected products (1)

cpe:2.3:a:whisperfish:blurhash-rs:0.1.1:*:*:*:*:rust:*:*

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