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Vulnerability · Published Sep 24, 2026 · Assigned by mitre

CVE-2026-88383

Medium 6.2

In plain English

A medium-severity type confusion in the libical3 package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).

Severity (CVSS 3.1)6.2Medium
Exploit odds (30 days)0.2%top 89.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

libical 4.0.6 contains an incompatible function pointer in icalparameter_string_to_kind(). When parsing iCalendar data containing a parameterized property, the function passes icalparameter_compare_kind_map() to bsearch() through an incompatible comparator function pointer type. bsearch() invokes the callback through the mismatched type, resulting in undefined behavior and process termination, leading to denial of service.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12libical3no fix listedDEBIAN-CVE-2026-88383
Debian:13libical3no fix listedDEBIAN-CVE-2026-88383
Debian:14libical3no fix listedDEBIAN-CVE-2026-88383

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

Weakness: CWE-843 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References