Medium (5.3) in atlassian bitbucket. EPSS 1.4% chance of exploitation in the next 30 days.
The repository settings resource in Atlassian Bitbucket Server before version 5.6.0 allows remote attackers to read the first line of arbitrary files via a path traversal vulnerability through the default branch name.
Severity
CVSS 3.0
5.3 medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS
1.4% chance of exploitation in the next 30 days; higher than 73% of CVEs (scores of 2026-10-31)