CVE-2021-22878

Description

Nextcloud Server prior to 20.0.6 is vulnerable to reflected cross-site scripting (XSS) due to lack of sanitization in `OC.Notification.show`.

References

PatchThird Party Advisory
Vendor Advisory
ExploitIssue TrackingThird Party Advisory
Mailing ListThird Party Advisory

CvssV3 impact

BaseSeverity

MEDIUM

ConfidentialityImpact

LOW

AttackComplexity

LOW

Scope

CHANGED

AttackVector

NETWORK

AvailabilityImpact

NONE

IntegrityImpact

LOW

PrivilegesRequired

HIGH

BaseScore

4.8

VectorString

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

Version

3.1

UserInteraction

REQUIRED

CvssV2 impact

AccessComplexity

MEDIUM

ConfidentialityImpact

NONE

AvailabilityImpact

NONE

IntegrityImpact

PARTIAL

BaseScore

3.5

VectorString

AV:N/AC:M/Au:S/C:N/I:P/A:N

Version

2.0

AccessVector

NETWORK

Authentication

SINGLE