Is CVE-2026-5223 in the CISA KEV catalog?

No. CVE-2026-5223 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-5223?

CVE-2026-5223 has a CVSS v3 base score of 5.3 (Low).

What is the EPSS score for CVE-2026-5223?

CVE-2026-5223 has an EPSS score of 0.29% (21th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-5223?

Upgrade cargo to 1.96.0 or later.

CVE & CISA-KEV Catalog

CVE-2026-5223

LOW

5.3

CVSS v3

NVD

Description

Cargo incorrectly handled symlinks inside of crate tarballs downloaded from third-party registries, allowing a malicious crate to override the source code of another crate from the same registry. The severity of the vulnerability is **medium** for users of third-party registries. Users of crates.io are **not affected**, as crates.io forbids uploading crates containing any symlink.

CWE-61

How to fix

Remediation Available

cargoNVD

Affected:< 1.96.0Fixed in:1.96.0CVE-2026-5223derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.29%probability of exploitation in 30 days

21stpercentile

Low risk: more likely to be exploited than 21% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

blog.rust-lang.org

Third-Party Advisory1

groups.google.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-01.