How severe is CVE-2020-8176?

CVE-2020-8176 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-8176 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-8176?

CVE-2020-8176 primarily affects Shopify Koa-shopify-auth. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-8176?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-8176 published?

CVE-2020-8176 was published on 2020-07-02 and last updated on 2026-06-17.

CVE-2020-8176

CVE-2020-8176 is a medium-severity vulnerability in Shopify Koa-shopify-auth with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Shopify Koa-shopify-auth
Published: 2020-07-02
Last modified: 2026-06-17

Description

A cross-site scripting vulnerability exists in koa-shopify-auth v3.1.61-v3.1.62 that allows an attacker to inject JS payloads into the `shop` parameter on the `/shopify/auth/enable_cookies` endpoint.

Frequently asked questions

What is CVE-2020-8176?: A cross-site scripting vulnerability exists in koa-shopify-auth v3.1.61-v3.1.62 that allows an attacker to inject JS payloads into the `shop` parameter on the `/shopify/auth/enable_cookies` endpoint.
How severe is CVE-2020-8176?: CVE-2020-8176 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-8176 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-8176?: CVE-2020-8176 primarily affects Shopify Koa-shopify-auth. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-8176?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-8176 published?: CVE-2020-8176 was published on 2020-07-02 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:shopify:koa-shopify-auth:3.1.61:*:*:*:*:*:*:*
cpe:2.3:a:shopify:koa-shopify-auth:3.1.62:*:*:*:*:*:*:*

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