CVE-2026-63270
🔶 mediumSummary
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 cover every place a document can supply a URL. XForms instance data and the Calc csv and sql data providers still reached the expansion. In fixed versions these places refuse URLs with internal schemes when the URL comes from the document.
CVSS Score
-
EPSS Score
0.1
Exploit Probability
Published Date
2026-10-05
First Seen: 2026-10-08
🎯 CISA SSVC Assessment Updated: Oct 5, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Partial
Limited system impact
🏆 Discovered By
Thomas Rinsma and Edoardo Geraci from Codean Labs (reporter)
Caolán McNamara of Collabora Productivity (remediation developer)
SSVC data provided by
CISA
Last Modified
2026-10-06
Source
NVD 🔗
CVSS Vector 4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE IDs (Weakness Types)