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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2023-3766

18
FAUCET Score

CVE-2023-3766 is a medium-severity denial-of-service vulnerability affecting the cloudflare odoh-rs Rust crate, specifically impacting ODOH servers utilizing it. The flaw lies in faulty logic during the parsing of encrypted queries, allowing an attacker to craft malicious queries that crash the server. While the attack complexity is high, successful exploitation results in service disruption and unavailability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.2CPE matchmatch criteria
cpe:2.3:a:cloudflare:odoh-rs:*:*:*:*:*:rust:*:*
>= 0, < 1.0.2CPE match
cpe:2.3:a:cloudflare:odoh-rs:*:*:*:*:*: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
0.65%
Probability of exploitation in next 30 days
EPSS Percentile
47.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0065 is in the 9th percentile among its peer group of 19,955 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

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
rustpatch availablevia ghsa
Product: odoh-rsFixed in: 1.0.2

Vendor Advisories (1)

rustGHSA-gpcv-p28p-fv2pmedium

odoh-rs's Invalid Slice Split Results in Server Panic

Aug 3, 2023

References

github.com / cloudflare/odoh-rs/pull/28
PatchVendor Advisory
github.com / cloudflare/odoh-rs/security/advisories/GHSA-gpcv-p28p-fv2p
Vendor Advisory