CVE-2023-42444
phonenumber panics on parsing crafted RF3966 inputs
phonenumber is a library for parsing, formatting and validating international phone numbers. Prior to versions 0.3.3+8.13.9 and 0.2.5+8.11.3, 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 over the network, specifically the string .;phone-context=. Versions 0.3.3+8.13.9 and 0.2.5+8.11.3 contain a patch for this issue. There are no known workarounds.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
8.6
phonenumber panics on parsing crafted RF3966 inputs
phonenumber is a library for parsing, formatting and validating international phone numbers. Prior to versions 0.3.3+8.13.9 and 0.2.5+8.11.3, 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 over the network, specifically the string .;phone-context=. Versions 0.3.3+8.13.9 and 0.2.5+8.11.3 contain a patch for this issue. There are no known workarounds.
- Record
CVE-2023-42444- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H - Weakness
- CWE-248, CWE-392, CWE-1284
- Updated
- 2026-11-02
EUVDEUVD-2023-2608
8.6
phonenumber is a library for parsing, formatting and validating international phone numbers. Prior to versions 0.3.3+8.13.9 and 0.2.5+8.11.3, 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 over the network, specifically the string .;phone-context=. Versions 0.3.3+8.13.9 and 0.2.5+8.11.3 contain a patch for this issue. There are no known workarounds.
- Record
EUVD-2023-2608- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-whhr-7f2w-qqj2
7.5
phonenumber panics on parsing crafted RFC3966 inputs
Impact
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 over the network, specifically the string .;phone-context=.
Patches
Patches will be published as version 0.3.3+8.13.9 and backported as 0.2.5+8.11.3.
Workarounds
n.a.
References
n.a.
- Record
GHSA-whhr-7f2w-qqj2- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-248, CWE-392, CWE-1284
- Updated
- 2026-11-02
NVD
8.6
phonenumber is a library for parsing, formatting and validating international phone numbers. Prior to versions 0.3.3+8.13.9 and 0.2.5+8.11.3, 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 over the network, specifically the string .;phone-context=. Versions 0.3.3+8.13.9 and 0.2.5+8.11.3 contain a patch for this issue. There are no known workarounds.
- Record
CVE-2023-42444- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-248, CWE-392, CWE-1284
- Updated
- 2026-11-02
OSV
8.6
phonenumber panics on parsing crafted RF3966 inputs
phonenumber is a library for parsing, formatting and validating international phone numbers. Prior to versions 0.3.3+8.13.9 and 0.2.5+8.11.3, 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 over the network, specifically the string .;phone-context=. Versions 0.3.3+8.13.9 and 0.2.5+8.11.3 contain a patch for this issue. There are no known workarounds.
- Record
CVE-2023-42444- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H - Weakness
- CWE-1284, CWE-248, CWE-392
- Updated
- 2026-11-02
OSVGHSA-whhr-7f2w-qqj2
7.5
phonenumber panics on parsing crafted RFC3966 inputs
Impact
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 over the network, specifically the string .;phone-context=.
Patches
Patches will be published as version 0.3.3+8.13.9 and backported as 0.2.5+8.11.3.
Workarounds
n.a.
References
n.a.
- Record
GHSA-whhr-7f2w-qqj2- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-1284, CWE-248, CWE-392
- Updated
- 2026-11-02
OSVRUSTSEC-2023-0082
8.6
phonenumber: panic on parsing crafted RF3966 phonenumber inputs
Impact
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 over the network, specifically the string .;phone-context=.
Patches
Patches will be published as version 0.3.3+8.13.9 and backported as 0.2.5+8.11.3.
- Record
RUSTSEC-2023-0082- CVSS 3.1
- 8.6 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
phonenumbercrates.io |
before 0.2.5 | 0.2.5 |
phonenumbercrates.io |
0.3.0 up to 0.3.3 | 0.3.3 |
phonenumbercrates.io |
0.0.0-0 up to 0.2.5, 0.3.0 up to 0.3.3 | 0.2.50.3.3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-42444 is a high vulnerability (CVSS 8.6) in Whisperfish Phonenumber, published September 19, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.87%, the 58th percentile. Fixed in phonenumber 0.2.5.
References
github.com/whisperfish/rust-phonenumber/security/advisories/GHSA-whhr-7f2w-qqj2
github.com/whisperfish/rust-phonenumber/commit/2dd44be94539c051b4dee55d1d9d349bd7bedde6
github.com/whisperfish/rust-phonenumber/commit/bea8e732b9cada617ede5cf51663dba183747f71
nvd.nist.gov/vuln/detail/CVE-2023-42444
rustsec.org/advisories/RUSTSEC-2023-0082.html
github.com/advisories/GHSA-whhr-7f2w-qqj2