GHSA-whhr-7f2w-qqj2: phonenumber (CVE-2023-42444)

phonenumber: panic on parsing crafted RF3966 phonenumber inputs

CVSS 8.6 HighEPSS 0.0087 · 58th percentile

Published by the GitHub Advisory Database at 19 Sept 2023, 12:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
phonenumber	crates.io	>=0.0.0-0, <0.2.5 \|\| >=0.3.0, <0.3.3	0.2.5, 0.3.3

Identifiers

GHSA-whhr-7f2w-qqj2 · CVE-2023-42444 · RUSTSEC-2023-0082

Weakness (CWE)

CWE-248 · CWE-392 · CWE-1284

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The phonenumber crate before 0.2.5, and versions 0.3.0 through 0.3.2, can panic when parsing a maliciously crafted RFC 3966 phone number. In a typical deployment, a remote attacker can trigger this by sending such input over the network, which causes the parser to panic. Upgrade to phonenumber 0.2.5 or 0.3.3.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.6	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0087, the 58th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:24 UTC First seen by agentprime
31 Oct 2026, 14:24 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.