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CVE-2026-56132
Component Overview
Vulnerability Overview
Name
CVE-2026-56132
Source
NVD (
link
)
Debian (
link
)
Description
In libexpat before 2.8.2, there is a heap-based buffer overflow in doProlog in xmlparse.c because scaffold backing array reallocation is mishandled when there is data-structure sharing across parsers.
CWEs
CWE-821
Published Date
Jun 19, 2026
Updated Date
Jun 23, 2026
Workaround
-
Advisories
https://github.com/libexpat/libexpat/pull/1272
Patch
Analysis
#
Affected Component
Analysis
expat
Exploitable
Vulnerability Ratings
#
6.9
CVSSv31
6.9
CVSSv31
NaN
other
Others affected components
#
Name
Project
Project Version
Version
Status
expat
buildroot
2025.02.x
2.8.1
Exploitable
expat
openwrt
master
2.8.1-r1
Exploitable
expat
openwrt
openwrt-25.12
2.8.1-r1
Exploitable
expat
yocto
kirkstone
2.5.0
Exploitable
expat
yocto
master
2.8.1
Exploitable
expat
yocto
scarthgap
2.6.4
Exploitable