TI-2026-45134 Aliases CVE-2026-63278 GHSA-74rr-xj7r-w3qp

Package URLs can be used to exfiltrate arbitrary INI file values and environment variables

LOW 29CWE-200Published 2026-09-22 · Updated 2026-09-22

Key facts

Attack vector: Local
Privileges required: Low
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-200.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00143 3rd percentileScored 2026-11-07

Fix Fixed LibreOffice (The Document Foundation): < 26.2.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
The Document Foundation	LibreOffice	26.2 to before < 26.2.5	< 26.2.5	Patch available	CNA

LibreOffice VendorThe Document Foundation Affected 26.2 to before < 26.2.5 Fixed in < 26.2.5 Patch available CNA

Remediation

Fix · CNA LibreOffice (The Document Foundation) Fixed in < 26.2.5

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-09-22
The Document Foundation LibreOffice < 26.2.5
7 records Highest priority Priority LOW 7 LOW
Other records, highest priority first
- TI-2026-45133 Stack buffer overflow in CFF to Type 1 font conversionPriority LOW 24
- TI-2026-45132 Stack buffer overflow in CFF font hint handlingPriority LOW 24
- TI-2026-45131 Heap buffer overflow in PDF import stream handlingPriority LOW 24
Show all 7 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Not affected: 4 products

Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9

Timeline

2026-10-02 Threatist record created from CVE-2026-63278
2026-10-03 Alias added: GHSA-74rr-xj7r-w3qp

References

Other 1

https://www.libreoffice.org/about-us/security/advisories/cve-2026-63278

TI-2019-07233 LibreLogo global-event script execution CVSS 3.1CRITICAL 9.8
TI-2018-12068 Path traversal in [UNKNOWN] libreoffice CVSS 3.0CRITICAL 9.8
TI-2018-07474 An information disclosure vulnerability occurs when LibreOffice 6.0.3 and Apache… CVSS 3.0HIGH 7.5
TI-2019-07230 Code injection in Document Foundation LibreOffice CVSS 3.1CRITICAL 9.8
TI-2018-05018 LibreOffice before 5.4.5 and 6.x before 6.0.1 allows remote attackers to read arbitrary… CVSS 3.0CRITICAL 9.8
TI-2023-01118 Arbitrary file write in libreoffice CVSS 3.1MEDIUM 5.5

See all 92 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences