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Persistent XSS through description in status page

Moderate
louislam published GHSA-wh8j-xr66-f296 Feb 13, 2023

Package

No package listed

Affected versions

<= 1.19.6

Patched versions

1.20.0

Description

Summary

Uptime Kuma status page allows persistent XSS.

PoC

  1. Run Uptime Kuma with version 1.19.2
  2. Create a new status page.
  3. Edit a status page and enter the following payload into "description": "><script>alert('XSS in description discovered by Manuel')</script>
  4. Press "Save" --> The payload is executed.
  5. The payload is also executed when you select the this status page.

Impact

https://cwe.mitre.org/data/definitions/79.html

Screenshots

Screenshot from 2022-12-28 23-40-04
Screenshot from 2022-12-28 23-40-18

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N

CVE ID

CVE-2023-25810

Weaknesses

Credits