6.7

CVE-2026-63278: the document foundation libreoffice

CVSS: 6.7v4.0MediumDeferred
AliasesUBUNTU-CVE-2026-63278DEBIAN-CVE-2026-63278
Published 22-09-2026Last modified 22-09-2026
Open JSON

Vulnerability summary

CVE-2026-63278 is a medium (CVSS 6.7) vulnerability in the document foundation libreoffice. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.1% of scored vulnerabilities.

Overall risk
27/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.7/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.14%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
MGASA-2026-0514USN-8868-1

Timeline

  1. 22-09-2026
    PublishedVulnerability first disclosed.
  2. 22-09-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

23-09-202619-10-2026
EPSS score
0.14%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • libreofficeAll versions (No fix recorded) | < 4:25.2.3-2+deb13u7 | < 4:26.2.5.2-1
The document foundation1 product
Ubuntu1 product
  • libreofficeAll versions (No fix recorded) | < 1:7.3.7-0ubuntu0.22.04.13 | < 4:24.2.7-0ubuntu0.24.04.7 | < 4:26.2.6.3-0ubuntu0.26.04.2

3 vendors · 3 products

References

6 links