How severe is CVE-2021-21319?

CVE-2021-21319 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-21319 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-2021-21319?

CVE-2021-21319 affects Galette. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-21319?

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

When was CVE-2021-21319 published?

CVE-2021-21319 was published on 2021-10-25 and last updated on 2026-06-17.

CVE-2021-21319

CVE-2021-21319 is a medium-severity vulnerability in Galette with a CVSS 3.x base score of 6.8. 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 6.8)
CVSS v2: 3.5
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Galette
Published: 2021-10-25
Last modified: 2026-06-17

Description

Galette is a membership management web application geared towards non profit organizations. In versions prior to 0.9.5, malicious javascript code can be stored to be displayed later on self subscription page. The self subscription feature can be disabled as a workaround (this is the default state). Malicious javascript code can be executed (not stored) on login and retrieve password pages. This issue is patched in version 0.9.5.

Frequently asked questions

What is CVE-2021-21319?: Galette is a membership management web application geared towards non profit organizations. In versions prior to 0.9.5, malicious javascript code can be stored to be displayed later on self subscription page. The self subscription feature can be disabled as a workaround (this is the default state). Malicious javascript code can be executed (not stored) on login and retrieve password pages. This issue is patched in version 0.9.5.
How severe is CVE-2021-21319?: CVE-2021-21319 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-21319 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-2021-21319?: CVE-2021-21319 affects Galette. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-21319?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-21319 published?: CVE-2021-21319 was published on 2021-10-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:galette:galette:*:*:*:*:*:*:*:*

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