An issue has been discovered in the arc-swap crate before 0.4.8 (and 1.x before 1.1.0)…
Priority LOW 36Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
An issue has been discovered in the arc-swap crate before 0.4.8 (and 1.x before 1.1.0) for Rust. Use of arc_swap::access::Map with the Constant test helper (or with a user-supplied implementation of the Access trait) could sometimes lead to dangling references being returned by the map.
Why it matters now
EPSS 0.01619 76th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed arc-swap (crates.io): 0.4.8, 1.1.0
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | arc-swap (crates.io) | 0.4.2 to before 0.4.8 | 0.4.8 | Patch available | GHSA-9pqx-g3jh-qpqq |
| — | arc-swap (crates.io) | 1.0.0 to before 1.1.0 | 1.1.0 | Patch available | GHSA-9pqx-g3jh-qpqq |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- arc-swap (crates.io) Vendor— Affected 0.4.2 to before 0.4.8 Fixed in 0.4.8 Patch available GHSA-9pqx-g3jh-qpqq
- arc-swap (crates.io) Vendor— Affected 1.0.0 to before 1.1.0 Fixed in 1.1.0 Patch available GHSA-9pqx-g3jh-qpqq
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:arc-swap_project:arc-swap:*:*:*:*:*:*:*:* | before 0.4.8; 1.0.0 to before 1.1.0 | Vulnerable | Arc-swap Project |
- cpe:2.3:a:arc-swap_project:arc-swap:*:*:*:*:*:*:*:* Versions before 0.4.8; 1.0.0 to before 1.1.0 Vulnerable ·Arc-swap Project
Remediation
- Fix · GHSA-9pqx-g3jh-qpqq arc-swap (crates.io) Fixed in 0.4.8 Advisory →
- Fix · GHSA-9pqx-g3jh-qpqq arc-swap (crates.io) Fixed in 1.1.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2020-35711
- 2026-10-03 Alias added: GHSA-9pqx-g3jh-qpqq
References
Sources
- CVE-2020-35711 · CVE Program
- CVE-2020-35711 · NVD
- FIRST EPSS
- GHSA-9pqx-g3jh-qpqq · GitHub Advisory Database · CC BY 4.0
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