CVE-2024-39697: Whisperfish Phonenumber

High severity, CVSS 8.6. EPSS: 0.7% chance of exploitation in the next 30 days.

phonenumber is a library for parsing, formatting and validating international phone numbers. Since 0.3.4, the phonenumber parsing code may panic due to a panic-guarded out-of-bounds access on the phonenumber string. In a typical deployment of rust-phonenumber, this may get triggered by feeding a maliciously crafted phonenumber, e.g. over the network, specifically strings of the form `+dwPAA;phone-context=AA`, where the "number" part potentially parses as a number larger than 2^56. This vulnerability is fixed in 0.3.6.

Affected products

• Whisperfish Phonenumber: from 0.3.4, before 0.3.6 (fixed in 0.3.6)
• Whisperfish Rust-Phonenumber: from 0.3.4, before 0.3.6 (fixed in 0.3.6)

Published 2024-07-09. Last modified 2026-06-17.