How severe is CVE-2020-8160?

CVE-2020-8160 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-2020-8160 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-8160?

CVE-2020-8160 affects Mendix Mendixsso. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-8160?

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

When was CVE-2020-8160 published?

CVE-2020-8160 was published on 2021-01-06 and last updated on 2026-06-17.

CVE-2020-8160

Q: What is CVE-2020-8160?

MendixSSO <= 2.1.1 contains endpoints that make use of the openid handler, which is suffering from a Cross-Site Scripting vulnerability via the URL path. This is caused by the reflection of user-supplied data without appropriate HTML escaping or output encoding. As a result, a JavaScript payload may be injected into the above endpoint causing it to be executed within the context of the victim's browser.

CVE-2020-8160 is a medium-severity vulnerability in Mendix Mendixsso 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% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Mendix Mendixsso
Published: 2021-01-06
Last modified: 2026-06-17

Description

MendixSSO <= 2.1.1 contains endpoints that make use of the openid handler, which is suffering from a Cross-Site Scripting vulnerability via the URL path. This is caused by the reflection of user-supplied data without appropriate HTML escaping or output encoding. As a result, a JavaScript payload may be injected into the above endpoint causing it to be executed within the context of the victim's browser.

Frequently asked questions

What is CVE-2020-8160?: MendixSSO <= 2.1.1 contains endpoints that make use of the openid handler, which is suffering from a Cross-Site Scripting vulnerability via the URL path. This is caused by the reflection of user-supplied data without appropriate HTML escaping or output encoding. As a result, a JavaScript payload may be injected into the above endpoint causing it to be executed within the context of the victim's browser.
How severe is CVE-2020-8160?: CVE-2020-8160 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-2020-8160 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-8160?: CVE-2020-8160 affects Mendix Mendixsso. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-8160?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-8160 published?: CVE-2020-8160 was published on 2021-01-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mendix:mendixsso:*:*:*:*:*:*:*:*

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