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No exploitation reportedFix available

CVE-2020-35711

No exploitation reported by the sources we read.

  • Published2020-12-25
  • Fixed in1.1.0 · 0.4.8

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2020-12-2523:15CVE publishedNVD

Versions per branch

NVD · OSV
Arc-swap project arc-swap
BranchAffectedFixed in
1.x≥ 1.0.0, < 1.1.01.1.0
1.x≥ 1.0.0-0, < 1.1.01.1.0
0.4< 0.4.80.4.8
0.4≥ 0.4.2, < 0.4.80.4.8

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • rust-arc-swapUbuntu:26.10all versions · no fixed version listed
  • rust-arc-swapUbuntu:26.04:LTSall versions · no fixed version listed
  • rust-arc-swapUbuntu:25.10all versions · no fixed version listed
  • rust-arc-swapUbuntu:24.04:LTSall versions · no fixed version listed
  • rust-arc-swapUbuntu:22.04:LTSall versions · no fixed version listed
  • rust-arc-swapUbuntu:20.04:LTSall versions · no fixed version listed
  • rust-arc-swapDebian:14all versions · fixed in 0.4.8-1
  • rust-arc-swapDebian:13all versions · fixed in 0.4.8-1

1 more package range on OSV.dev

Full record on NVD

Fix

  1. Update Arc-swap project arc-swap to 1.1.0 · 0.4.8

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2020-12-25
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-9pqx-g3jh-qpqq

Frequently asked questions

What is CVE-2020-35711?

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.

Is CVE-2020-35711 actively exploited?

Active exploitation of CVE-2020-35711 has not been confirmed. Its EPSS score was 1.6% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-35711?

CVE-2020-35711 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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