CVE-2026-63278CWE-200information-disclosure

CVE-2026-63278

published September 22, 2026

CVSS
6.7
EPSS
0%
Percentile
3.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
6.7 · NONE
CVSS v4.0
6.7 · 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
EPSS
0.00143 · 3.2th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2026-09-22T16:17Z
References (1)
EPSS history
Timeline
  • 24 SEP 03:24Z
    EPSS moved — → 0%
    epss
  • 22 SEP 11:10Z
    Package URLs can be used to exfiltrate arbitrary INI file values and environment variables
    cvelistv5