How severe is CVE-2021-25983?

CVE-2021-25983 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-2021-25983 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25983?

CVE-2021-25983 affects Darwin Factor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-25983?

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

When was CVE-2021-25983 published?

CVE-2021-25983 was published on 2021-11-16 and last updated on 2026-06-17.

CVE-2021-25983

CVE-2021-25983 is a medium-severity vulnerability in Darwin Factor 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% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Darwin Factor
Published: 2021-11-16
Last modified: 2026-06-17

Description

In Factor (App Framework & Headless CMS) forum plugin, versions v1.3.8 to v1.8.30, are vulnerable to reflected Cross-Site Scripting (XSS) at the “tags” and “category” parameters in the URL. An unauthenticated attacker can execute malicious JavaScript code and steal the session cookies.

Frequently asked questions

What is CVE-2021-25983?: In Factor (App Framework & Headless CMS) forum plugin, versions v1.3.8 to v1.8.30, are vulnerable to reflected Cross-Site Scripting (XSS) at the “tags” and “category” parameters in the URL. An unauthenticated attacker can execute malicious JavaScript code and steal the session cookies.
How severe is CVE-2021-25983?: CVE-2021-25983 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-2021-25983 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25983?: CVE-2021-25983 affects Darwin Factor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-25983?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-25983 published?: CVE-2021-25983 was published on 2021-11-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:darwin:factor:*:*:*:*:*:node.js:*:*

More vulnerabilities in Darwin Factor

CVE-2021-25985 — High (CVSS 7.8): In Factor (App Framework & Headless CMS) v1.0.4 to v1.8.30, improperly invalidate a user’s session even after the…
CVE-2021-25984 — Medium (CVSS 6.1): In Factor (App Framework & Headless CMS) forum plugin, versions v1.3.3 to v1.8.30, are vulnerable to stored Cross-Site…
CVE-2021-25982 — Medium (CVSS 6.1): In Factor (App Framework & Headless CMS) forum plugin, versions 1.3.5 to 1.8.30, are vulnerable to reflected Cross-Site…

All CVEs affecting Darwin Factor →

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