Description
A Double Free in XSLT `show_index` has been identified in Hiawatha webserver version 11.7 which allows an unauthenticated attacker to corrupt data which may lead to arbitrary code execution.
Scores
CVSS v3
6.5
EPSS
0.0013
EPSS Percentile
32.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-415
Status
published
Products (1)
hiawatha.leisink/hiawatha_webserver
11.7
Published
Jan 26, 2026
Tracked Since
Feb 18, 2026