How severe is CVE-2020-35882?

CVE-2020-35882 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-35882 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35882?

CVE-2020-35882 affects Rocket. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35882?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-35882 published?

CVE-2020-35882 was published on 2020-12-31 and last updated on 2026-06-17.

CVE-2020-35882

CVE-2020-35882 is a high-severity vulnerability in Rocket with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-362.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 6.8
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-362
Affected product: Rocket
Published: 2020-12-31
Last modified: 2026-06-17

Description

An issue was discovered in the rocket crate before 0.4.5 for Rust. LocalRequest::clone creates more than one mutable references to the same object, possibly causing a data race.

Frequently asked questions

What is CVE-2020-35882?: An issue was discovered in the rocket crate before 0.4.5 for Rust. LocalRequest::clone creates more than one mutable references to the same object, possibly causing a data race.
How severe is CVE-2020-35882?: CVE-2020-35882 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-35882 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35882?: CVE-2020-35882 affects Rocket. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35882?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-35882 published?: CVE-2020-35882 was published on 2020-12-31 and last updated on 2026-06-17.

References

https://rustsec.org/advisories/RUSTSEC-2020-0028.html

Affected products (1)

cpe:2.3:a:rocket:rocket:*:*:*:*:*:rust:*:*

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