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Fencer Vulns
low 2.9

CVE-2024-58253 json

obfstr Type Confusion vulnerability

published 2025-05-02 18 mo ago modified 2026-06-17 4 mo ago also GHSA-v2p5-q653-9j99 , EUVD-2024-54445

cvss
2.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits
0
none known

Summary

In the obfstr crate before 0.4.4 for Rust, the obfstr! argument type is not restricted to string slices, leading to invalid UTF-8 conversion that produces an invalid value.

Patch / fix

  • crates.io obfstr 0.4.4
  • CasualX obfstr 0.4.4

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 2.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
GitHub 3.1 2.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
crates.io obfstr
<0.4.4
0.4.4

Affected products

  • CasualX obfstr

Classification

Weakness
  • CWE-843 Access of Resource Using Incompatible Type

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.