How severe is CVE-2021-3619?

CVE-2021-3619 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-3619 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3619?

CVE-2021-3619 affects Rapid7 Velociraptor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-3619?

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

When was CVE-2021-3619 published?

CVE-2021-3619 was published on 2021-07-22 and last updated on 2026-06-17.

CVE-2021-3619

CVE-2021-3619 is a low-severity vulnerability in Rapid7 Velociraptor with a CVSS 3.x base score of 3.5. 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: Low (CVSS 3.x base score 3.5)
CVSS v2: 3.5
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Rapid7 Velociraptor
Published: 2021-07-22
Last modified: 2026-06-17

Description

Rapid7 Velociraptor 0.5.9 and prior is vulnerable to a post-authentication persistent cross-site scripting (XSS) issue, where an authenticated user could abuse MIME filetype sniffing to embed executable code on a malicious upload. This issue was fixed in version 0.6.0. Note that login rights to Velociraptor is nearly always reserved for trusted and verified users with IT security backgrounds.

Frequently asked questions

What is CVE-2021-3619?: Rapid7 Velociraptor 0.5.9 and prior is vulnerable to a post-authentication persistent cross-site scripting (XSS) issue, where an authenticated user could abuse MIME filetype sniffing to embed executable code on a malicious upload. This issue was fixed in version 0.6.0. Note that login rights to Velociraptor is nearly always reserved for trusted and verified users with IT security backgrounds.
How severe is CVE-2021-3619?: CVE-2021-3619 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-3619 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3619?: CVE-2021-3619 affects Rapid7 Velociraptor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-3619?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-3619 published?: CVE-2021-3619 was published on 2021-07-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:rapid7:velociraptor:*:*:*:*:*:*:*:*

More vulnerabilities in Rapid7 Velociraptor

CVE-2023-0242 — High (CVSS 8.8): Rapid7 Velociraptor allows users to be created with different privileges on the server. Administrators are generally…
CVE-2023-5950 — High (CVSS 8.6): Rapid7 Velociraptor versions prior to 0.7.0-4 suffer from a reflected cross site scripting vulnerability. This…
CVE-2026-5329 — High (CVSS 8.5): Rapid7 Velociraptor versions prior to 0.76.2 contain an improper input validation vulnerability in the client…
CVE-2026-6290 — High (CVSS 8.0): Velociraptor versions prior to 0.76.3 contain a vulnerability in the query() plugin which allows access to all orgs…
CVE-2025-14728 — Medium (CVSS 6.8): Rapid7 Velociraptor versions before 0.75.6 contain a directory traversal issue on Linux servers that allows a rogue…
CVE-2022-35630 — Medium (CVSS 6.1): A cross-site scripting (XSS) issue in generating a collection report made it possible for malicious clients to inject…

All CVEs affecting Rapid7 Velociraptor →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →