How severe is CVE-2021-38221?

CVE-2021-38221 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-38221 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38221?

CVE-2021-38221 affects Bbs-go Project Bbs-go. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-38221?

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

When was CVE-2021-38221 published?

CVE-2021-38221 was published on 2022-06-02 and last updated on 2026-06-17.

CVE-2021-38221

Q: What is CVE-2021-38221?

bbs-go <= 3.3.0 including Custom Edition is vulnerable to stored XSS.

CVE-2021-38221 is a medium-severity vulnerability in Bbs-go Project Bbs-go with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Bbs-go Project Bbs-go
Published: 2022-06-02
Last modified: 2026-06-17

Description

bbs-go <= 3.3.0 including Custom Edition is vulnerable to stored XSS.

Frequently asked questions

What is CVE-2021-38221?: bbs-go <= 3.3.0 including Custom Edition is vulnerable to stored XSS.
How severe is CVE-2021-38221?: CVE-2021-38221 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-38221 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38221?: CVE-2021-38221 affects Bbs-go Project Bbs-go. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-38221?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-38221 published?: CVE-2021-38221 was published on 2022-06-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:bbs-go_project:bbs-go:*:*:*:*:*:*:*:*

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