PT-2026-49268 · Document Foundation · Libreoffice

Anthropic + 1 · Published 2026-06-15 · Updated 2026-06-15 · CVE-2026-8358

Positive Technologies (AI Summary)

CVSS v4.0

6.9

Medium

Base vector

AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions LibreOffice Calc (affected versions not specified)

Description A heap buffer overflow occurs during the import of tracked changes from a spreadsheet document. This happens when a document reuses the same change identifier for two different types of changes, causing the importer to treat a change object as a larger type and write data beyond the allocated memory boundary.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Type Confusion

Memory Corruption

Weakness Enumeration

CWE-843

CWE-787

Related Identifiers

CVE-2026-8358

Affected Products

Libreoffice

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-8358 · Security Note
• https://libreoffice.org/about-us/security/advisories/cve-2026-8358 · Note
• https://t.me/CVEtracker/56881 · Telegram Post