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CVE-2024-39697

23
FAUCET Score

CVE-2024-39697 is a high-severity vulnerability affecting the 'phonenumber' library (versions 0.3.4 and 0.3.5), which is used for parsing, formatting, and validating international phone numbers. A maliciously crafted phonenumber string, specifically of the form `+dwPAA;phone-context=AA` where the number part is excessively large, can trigger an out-of-bounds access, leading to a denial-of-service (DoS) condition. This vulnerability has a CVSS score of 8.6 (High) due to its network-based attack vector, low attack complexity, and high impact on availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage. The issue is resolved in version 0.3.6 of the library.

Impacted Technologies

VendorProductVersion(s)CPE
WhisperfishRust-Phonenumber
>= 0.3.4, < 0.3.6CNA affected

CVSS Data

CVSS version used by this source: 3.1

8.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.71%
Probability of exploitation in next 30 days
EPSS Percentile
49.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0071 is in the 26th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

rustpatch availablevia ghsa
Product: phonenumberFixed in: 0.3.6

Vendor Advisories (1)

rustGHSA-mjw4-jj88-v687critical

panic on parsing crafted phonenumber inputs

Jul 9, 2024

References

github.com / whisperfish/rust-phonenumber/commit/b792151b17fc90231c232a23935830c2266f3203
github.com / whisperfish/rust-phonenumber/commit/f69abee1481fac0d6d531407bae90020e39c6407
github.com / whisperfish/rust-phonenumber/issues/69
github.com / whisperfish/rust-phonenumber/pull/52
github.com / whisperfish/rust-phonenumber/security/advisories/GHSA-mjw4-jj88-v687