Vulnerability · Published Apr 24, 2026 · Assigned by mitre
CVE-2026-42095
Medium 4.0
In plain English
A medium-severity missing authentication in Arianna from KDE. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)4.0Medium
Exploit odds (30 days)0.2%top 94.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
bookserver in KDE Arianna before 26.04.1 allows attackers to read files over a socket connection by guessing a URL.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | arianna | no fix listed | DEBIAN-CVE-2026-42095 |
| Debian:14 | arianna | 25.12.3-2 | DEBIAN-CVE-2026-42095 |
| Ubuntu:25.10 | arianna | no fix listed | UBUNTU-CVE-2026-42095 |
| Ubuntu:26.04:LTS | arianna | no fix listed | UBUNTU-CVE-2026-42095 |
| Ubuntu:26.10 | arianna | no fix listed | UBUNTU-CVE-2026-42095 |
Affected products (as reported)
Weakness: CWE-306 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N