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CVE-2020-8176

17
FAUCET Score

CVE-2020-8176 describes a cross-site scripting (XSS) vulnerability in koa-shopify-auth versions 3.1.61 to 3.1.62, allowing attackers to inject JavaScript payloads via the 'shop' parameter on the /shopify/auth/enable_cookies endpoint. This medium-severity vulnerability (CVSS 6.1) requires user interaction (UI:R) and could lead to low impact on confidentiality and integrity (C:L/I:L). There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.1.61CPE matchmatch criteria
cpe:2.3:a:shopify:koa-shopify-auth:3.1.61:*:*:*:*:*:*:*
3.1.62CPE matchmatch criteria
cpe:2.3:a:shopify:koa-shopify-auth:3.1.62:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.98%
Probability of exploitation in next 30 days
EPSS Percentile
58.7%
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 71st percentile among its peer group of 26,236 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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
npmpatch availablevia ghsa
Product: @shopify/koa-shopify-authFixed in: 3.1.63

Vendor Advisories (1)

npmGHSA-jqh7-w5pr-cr56medium

Cross-site scripting in @shopify/koa-shopify-auth

May 17, 2021

References

github.com / Shopify/quilt/pull/1455
ExploitPatchThird Party Advisory
hackerone.com / reports/881409
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