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Advisories

Vikunja before 2.7.1 Resource Exhaustion via CalDAV VTODO RELATED-TO Entries

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Severity
medium
Date
Affecting

  • vikunja >= 0, < 2.7.1

CWE
  • CWE-770 Allocation of Resources Without Limits or Throttling
CVSS
5.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Description
Vikunja before 2.7.1 contains an uncontrolled resource consumption vulnerability that allows authenticated CalDAV clients to create unbounded dummy tasks by sending VTODOs with thousands of RELATED-TO properties. Attackers can repeat unknown related UIDs in a single PUT request to generate thousands of task, relation, and event rows, bloating the database and overloading the event pipeline.

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