CVE-2026-77399

Katalog CVE

CVSS 6.5 · Medium EPSS 0,31%

Kerentanan Uncontrolled Resource Consumption. Skor CVSS 3.1 6.5 (Medium) menurut github.com.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

22 September 2026

Terakhir diubah

23 September 2026

Status NVD

Awaiting Analysis

CVSS 3.1

6.5 (Medium), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-400: Uncontrolled Resource Consumption
CWE-834: Excessive Iteration

EPSS (30 hari)

0,31% peluang dieksploitasi; lebih tinggi dari 22,2% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/collective/icalendar/commit/157f85137c65565a308bbcf4fdcc7d8ebce01267
• https://github.com/collective/icalendar/commit/cddd37226adbc52cca52a399f61d38a378221219
• https://github.com/collective/icalendar/pull/1571
• https://github.com/collective/icalendar/releases/tag/v7.2.2
• https://github.com/collective/icalendar/security/advisories/GHSA-qjcq-q7h7-r74v