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Fencer Vulns
high 7.5

CVE-2021-43620 json

Improper Input Validation in fruity

published 2021-11-14 4 y ago modified 2026-06-17 4 mo ago also GHSA-h352-g5vw-3926 , RUSTSEC-2021-0123 , EUVD-2021-2353

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 71%
public exploits
0
none known

Summary

An issue was discovered in the fruity crate through 0.2.0 for Rust. Security-relevant validation of filename extensions is plausibly affected. Methods of NSString for conversion to a string may return a partial result. Because they call CStr::from_ptr on a pointer to the string buffer, the string is terminated at the first '\0' byte, which might not be the end of the string.

Patch / fix

  • crates.io fruity 0.3.0

Exploit prediction

1.36% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/nvzqz/fruity/issues/14 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/rustsec/advisory-db/pull/1102 referenced PoC, tagged "exploit" by a source, unverified
  • rustsec.org https://rustsec.org/advisories/RUSTSEC-2021-0123.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
crates.io fruity
>=0.1.0, <0.3.0
0.3.0

Classification

Weakness
  • CWE-20 Improper Input Validation

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.