DEBIAN-CVE-2026-77399
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-77399
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-77399.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-77399
- Upstream
- Published
- 2026-09-22T19:16:51Z
- Modified
- 2026-09-24T08:47:27Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
icalendar is an RFC 5545 compatible parser and generator of iCalendar files for Python. From 6.1.0 until 7.2.2, vInt.from_ical accepts an attacker-controlled VALARM REPEAT value and applications that request alarm times can eagerly expand it without an application-level limit. Alarms.times and Alarms.active reach the unbounded expansion in versions starting with 6.1.0, while Alarm.triggers adds a second affected path starting with 7.0.0. Parsing alone does not trigger the issue, but accessing these properties can consume excessive CPU time and heap memory and terminate or stall a service. This issue is fixed in version 7.2.2.
- References
Affected packages
Debian:14 / python-icalendar
Package
- Name
- python-icalendar
- Purl
- pkg:deb/debian/python-icalendar?arch=source&distro=forky