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CVE-2020-36565

20
FAUCET Score

CVE-2020-36565 is a directory traversal vulnerability affecting Labstack Echo on Windows, stemming from improper user input sanitization in its static file handler. This allows an unauthenticated attacker to read arbitrary files outside the intended directory, provided the server has read permissions. Rated Medium severity (CVSS 5.3), it requires no user interaction and has a low impact on confidentiality. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.2.0CPE matchmatch criteria
cpe:2.3:a:labstack:echo:*:*:*:*:*:go:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.32%
Probability of exploitation in next 30 days
EPSS Percentile
68.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0132 is in the 48th percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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
gopatch availablevia ghsa
Product: github.com/labstack/echo/v4Fixed in: 4.2.0

Vendor Advisories (1)

goGHSA-j453-hm5x-c46wmedium

Echo vulnerable to directory traversal

Dec 7, 2022

References

github.com / labstack/echo/commit/4422e3b66b9fd498ed1ae1d0242d660d0ed3faaa
PatchThird Party Advisory
github.com / labstack/echo/pull/1718
ExploitPatchThird Party Advisory
pkg.go.dev / vuln/GO-2021-0051
Release NotesVendor Advisory