What is CVE-2021-21247?

CVE-2021-21247 is a critical-severity vulnerability in Theonedev Onedev, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.6/10. Published 2021-01-15.

How severe is CVE-2021-21247?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Vulnerability in Theonedev Onedev

CVE-2021-21247

OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, the application's BasePage registers an AJAX event listener (`AbstractPostAjaxBehavior`) in all pages other than the login page. This listener decodes and deserialize…

EPSS: 0.003 (54.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.

Affected products

Theonedev Onedev — versions < 4.0.3

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

References

github.com/theonedev/onedev/security/advisories/GHSA-6pxf-75cf-vwjp (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2021-21247?: CVE-2021-21247 is a critical-severity vulnerability in Theonedev Onedev, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.6/10. Published 2021-01-15.
How severe is CVE-2021-21247?: Critical severity. CVSS v3 base score is 9.6 out of 10.