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CVE-2020-36569

28
FAUCET Score

CVE-2020-36569 describes a critical authentication bypass vulnerability in github.com/nanobox-io/golang-nanoauth, affecting versions between v0.0.0-20160722212129-ac0cc4484ad4 and v0.0.0-20200131131040-063a3fb69896, specifically when ListenAndServe is called with an empty token. This flaw, rated 9.1 CRITICAL (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N), allows unauthenticated attackers to achieve complete compromise of confidentiality and integrity with low attack complexity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2016-07-22, <= 2020-01-31CPE matchmatch criteria
cpe:2.3:a:digitalocean:golang-nanoauth:*:*:*:*:*:go:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.81%
Probability of exploitation in next 30 days
EPSS Percentile
53.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0081 is in the 37th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 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
gopatch availablevia ghsa
Product: github.com/nanobox-io/golang-nanoauthFixed in: 0.0.0-20200131131040-063a3fb69896

Vendor Advisories (1)

goGHSA-hrm3-3xm6-x33hcritical

golang-nanoauth authentication bypass vulnerability

Dec 28, 2022

References

github.com / nanobox-io/golang-nanoauth/commit/063a3fb69896acf985759f0fe3851f15973993f3
PatchThird Party Advisory
github.com / nanobox-io/golang-nanoauth/pull/5
Third Party Advisory
pkg.go.dev / vuln/GO-2020-0004
Third Party Advisory