Vulnerability · CVE-2026-42095
bookserver in KDE Arianna before 26.04.1 allows attackers to read files over a socket connection by guessing a URL.
Published Apr 24, 2026 · catalog updated Jun 17, 2026 · bookserver in KDE Arianna
Check if you run it
No confirmed exploitation is on record for CVE-2026-42095. EPSS is 0.17%. Act only if a listed version of bookserver in KDE Arianna is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (bookserver in KDE Arianna).
- No version range is stored. A customer cannot check an installed version against this record.
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Medium4.0
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.17%
- Remediation
- Advisory link
- Affected products
- See sources for product scope
bookserver in KDE Arianna before 26.04.1 allows attackers to read files over a socket connection by guessing a URL.
No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.
How to fix CVE-2026-42095
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-42095. EPSS is 0.17%. Act only if a listed version of bookserver in KDE Arianna is installed.
Which versions are affected?
Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-306: Missing Authentication for Critical Function. EPSS 0.17%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Apr 24, 2026 · NIST NVD
Detected
bookserver in KDE Arianna before 26.04.1 allows attackers to read files over a socket connection by guessing a URL.
Jun 17, 2026 · NIST NVD
Updated
bookserver in KDE Arianna before 26.04.1 allows attackers to read files over a socket connection by guessing a URL.
Sources
- CVE.orgVulnerability recordCVE-2026-42095
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-42095
30-day exploitation probability 0.2%
first.org - NIST NVDVulnerability recordCVE-2026-42095
bookserver in KDE Arianna before 26.04.1 allows attackers to read files over a socket connection by guessing a URL.
nvd.nist.gov
References
Freshness
Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.