CVE-2026-63278
Publication date 22 September 2026
Last updated 5 October 2026
Ubuntu priority
Description
URLs could be constructed which expanded environment variable or INI file values, so potentially sensitive information could be exfiltrated to a remote server on opening a document containing such links. The check added for CVE-2024-12426 did not recognise every way of naming the package content provider, so a URL that named it differently still reached the expansion. In fixed versions the package content provider is matched when the URL is checked.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| libreoffice | 26.04 LTS resolute |
Fixed 4:26.2.6.3-0ubuntu0.26.04.2
|
| 24.04 LTS noble |
Fixed 4:24.2.7-0ubuntu0.24.04.7
|
|
| 22.04 LTS jammy |
Fixed 1:7.3.7-0ubuntu0.22.04.13
|
|
| 20.04 LTS focal |
Needs evaluation
|
Severity score breakdown
CVSS version: CVSS v4.0
Base score
6.7 · Medium
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
References
Related Ubuntu Security Notices (USN)
- USN-8868-1
- LibreOffice vulnerabilities
- 5 October 2026