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CVE-2020-36469

20
FAUCET Score

CVE-2020-36469 describes an issue in the Rust 'appendix' crate, specifically affecting versions through 2020-11-15, where the Send and Sync traits are unconditionally implemented for generic K and V type parameters. Rated with a CVSS score of 5.9 (Medium), this vulnerability has a network attack vector and high attack complexity, potentially leading to a high impact on availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2020-11-15CPE matchmatch criteria
cpe:2.3:a:appendix_project:appendix:*:*:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.98%
Probability of exploitation in next 30 days
EPSS Percentile
58.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0098 is in the 17th percentile among its peer group of 19,956 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

rustGHSA-fvhr-7j8m-3cvcmedium

Data races in appendix

Aug 25, 2021

References

raw.githubusercontent.com / rustsec/advisory-db/main/crates/appendix/RUSTSEC-2020-0149.md
Third Party Advisory
rustsec.org / advisories/RUSTSEC-2020-0149.html
ExploitIssue TrackingPatchThird Party Advisory