How severe is CVE-2019-20921?

CVE-2019-20921 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-2019-20921 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-20921?

CVE-2019-20921 affects Snapappointments Bootstrap-select. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-20921?

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

When was CVE-2019-20921 published?

CVE-2019-20921 was published on 2020-09-30 and last updated on 2026-06-17.

CVE-2019-20921

CVE-2019-20921 is a medium-severity vulnerability in Snapappointments Bootstrap-select 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: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Snapappointments Bootstrap-select
Published: 2020-09-30
Last modified: 2026-06-17

Description

bootstrap-select before 1.13.6 allows Cross-Site Scripting (XSS). It does not escape title values in OPTION elements. This may allow attackers to execute arbitrary JavaScript in a victim's browser.

Frequently asked questions

What is CVE-2019-20921?: bootstrap-select before 1.13.6 allows Cross-Site Scripting (XSS). It does not escape title values in OPTION elements. This may allow attackers to execute arbitrary JavaScript in a victim's browser.
How severe is CVE-2019-20921?: CVE-2019-20921 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-2019-20921 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-20921?: CVE-2019-20921 affects Snapappointments Bootstrap-select. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-20921?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-20921 published?: CVE-2019-20921 was published on 2020-09-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:snapappointments:bootstrap-select:*:*:*:*:*:node.js:*:*

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