How severe is CVE-2020-35894?

CVE-2020-35894 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-35894 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35894?

CVE-2020-35894 affects Obstack Project Obstack. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35894?

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-2020-35894 published?

CVE-2020-35894 was published on 2020-12-31 and last updated on 2026-06-17.

CVE-2020-35894

CVE-2020-35894 is a high-severity vulnerability in Obstack Project Obstack with a CVSS 3.x base score of 7.5. 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-706.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-706
Affected product: Obstack Project Obstack
Published: 2020-12-31
Last modified: 2026-06-17

Description

An issue was discovered in the obstack crate before 0.1.4 for Rust. Unaligned references can occur.

Frequently asked questions

What is CVE-2020-35894?: An issue was discovered in the obstack crate before 0.1.4 for Rust. Unaligned references can occur.
How severe is CVE-2020-35894?: CVE-2020-35894 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-35894 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35894?: CVE-2020-35894 affects Obstack Project Obstack. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35894?: 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-2020-35894 published?: CVE-2020-35894 was published on 2020-12-31 and last updated on 2026-06-17.

References

https://rustsec.org/advisories/RUSTSEC-2020-0040.html

Affected products (1)

cpe:2.3:a:obstack_project:obstack:*:*:*:*:*:rust:*:*

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