How severe is CVE-2021-32091?

CVE-2021-32091 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-2021-32091 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-32091?

CVE-2021-32091 affects Localstack. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-32091?

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

When was CVE-2021-32091 published?

CVE-2021-32091 was published on 2021-05-07 and last updated on 2026-06-17.

CVE-2021-32091

CVE-2021-32091 is a medium-severity vulnerability in Localstack 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% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Localstack
Published: 2021-05-07
Last modified: 2026-06-17

Description

A Cross-site scripting (XSS) vulnerability exists in StackLift LocalStack 0.12.6.

Frequently asked questions

What is CVE-2021-32091?: A Cross-site scripting (XSS) vulnerability exists in StackLift LocalStack 0.12.6.
How severe is CVE-2021-32091?: CVE-2021-32091 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-2021-32091 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-32091?: CVE-2021-32091 affects Localstack. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-32091?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-32091 published?: CVE-2021-32091 was published on 2021-05-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:localstack:localstack:0.12.6:*:*:*:*:*:*:*

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