What is CVE-2017-16821?

CVE-2017-16821 is a medium-severity vulnerability in B3log Symphony, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2017-11-15.

How severe is CVE-2017-16821?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in B3log Symphony

CVE-2017-16821

b3log Symphony (aka Sym) 2.2.0 has XSS in processor/AdminProcessor.java in the admin console, as demonstrated by a crafted X-Forwarded-For HTTP header that is mishandled during display of a client IP address in /admin/user/userid.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (38.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

B3log Symphony — versions 2.2.0
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (x_refsource_CONFIRM, Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2017-16821?: CVE-2017-16821 is a medium-severity vulnerability in B3log Symphony, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2017-11-15.
How severe is CVE-2017-16821?: Medium severity. CVSS v3 base score is 5.4 out of 10.