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CVE-2023-42444

phonenumber panics on parsing crafted RF3966 inputs

8.6 HighFix available

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

0.87%Up 0.8 points since Sep 20, 2023
90%50%10%1%

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 HighCVSS: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 HighCVSS: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 HighCVSS: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 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS 3.1
7.5 HighCVSS: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 HighCVSS: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 HighCVSS: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 HighCVSS: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

Affected packages
PackageAffectedFixed
phonenumber
crates.io
before 0.2.5
0.2.5
phonenumber
crates.io
0.3.0 up to 0.3.3
0.3.3
phonenumber
crates.io
0.0.0-0 up to 0.2.5, 0.3.0 up to 0.3.3
0.2.50.3.3

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE 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

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