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.

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CVSS v3.1

5.4 MEDIUM

EPSS

0.48%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredLOW

User InteractionREQUIRED

ScopeCHANGED

ConfidentialityLOW

IntegrityLOW

AvailabilityNONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Connections

2 relationships

CWE-79

source

Timeline

disclosure → media coverage

Nov 15, 2017

Disclosure — published as a CVE record. · last revised by NVD May 13, 2026