CVE-2026-102555

EUVD-2026-89102
A flaw was found in libsoup. The soup_uri_decode_data_uri() function incorrectly treated base64 data-URI payloads as NUL-terminated strings when calling g_base64_decode_inplace(). If the percent-decoded payload contained embedded NUL bytes, the decoded length could remain uninitialized and be used as the size of the returned GBytes. This can lead to an out-of-bounds read or application crash when processing a crafted data URI.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.2 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 41.91%
Affected Products (NVD)
VendorProductVersion
gnomelibsoup
𝑥
< 3.7.3
redhatenterprise_linux
9.0
redhatenterprise_linux
10.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libsoup2.4
bookworm
vulnerable
trixie
no-dsa
libsoup3
bookworm
postponed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libsoup2.4
bionic
Fixed in 2.62.1-1ubuntu0.4+esm10
released
focal
Fixed in 2.70.0-1ubuntu0.5+esm5
released
jammy
Fixed in 2.74.2-3ubuntu0.10
released
noble
Fixed in 2.74.3-6ubuntu1.10
released
resolute
Fixed in 2.74.3-10.1ubuntu5+esm4
released
stonking
needs-triage
xenial
Fixed in 2.52.2-1ubuntu0.3+esm9
released
libsoup3
jammy
Fixed in 3.0.7-0ubuntu1+esm10
released
noble
Fixed in 3.4.4-5ubuntu0.10
released
resolute
Fixed in 3.6.6-1ubuntu0.2
released
stonking
Fixed in 3.6.6-1ubuntu3.1
released
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
libsoup-3_0-0
suse enterprise desktop 15 SP7
3.4.4-150600.3.59.1
fixed
suse enterprise sap 15 SP4
3.0.4-150400.3.55.1
fixed
suse enterprise sap 15 SP5
3.0.4-150400.3.55.1
fixed
suse enterprise sap 15 SP6
3.4.4-150600.3.59.1
fixed
suse enterprise sap 15 SP7
3.4.4-150600.3.59.1
fixed
suse enterprise server 15 SP4
3.0.4-150400.3.55.1
fixed
suse enterprise server 15 SP5
3.0.4-150400.3.55.1
fixed
suse enterprise server 15 SP6
3.4.4-150600.3.59.1
fixed
suse enterprise server 15 SP7
3.4.4-150600.3.59.1
fixed
libsoup-devel
suse enterprise desktop 15 SP7
3.4.4-150600.3.59.1
fixed
suse enterprise sap 15 SP4
3.0.4-150400.3.55.1
fixed
suse enterprise sap 15 SP5
3.0.4-150400.3.55.1
fixed
suse enterprise sap 15 SP6
3.4.4-150600.3.59.1
fixed
suse enterprise sap 15 SP7
3.4.4-150600.3.59.1
fixed
suse enterprise server 15 SP4
3.0.4-150400.3.55.1
fixed
suse enterprise server 15 SP5
3.0.4-150400.3.55.1
fixed
suse enterprise server 15 SP6
3.4.4-150600.3.59.1
fixed
suse enterprise server 15 SP7
3.4.4-150600.3.59.1
fixed
libsoup-lang
suse enterprise desktop 15 SP7
3.4.4-150600.3.59.1
fixed
suse enterprise sap 15 SP4
3.0.4-150400.3.55.1
fixed
suse enterprise sap 15 SP5
3.0.4-150400.3.55.1
fixed
suse enterprise sap 15 SP6
3.4.4-150600.3.59.1
fixed
suse enterprise sap 15 SP7
3.4.4-150600.3.59.1
fixed
suse enterprise server 15 SP4
3.0.4-150400.3.55.1
fixed
suse enterprise server 15 SP5
3.0.4-150400.3.55.1
fixed
suse enterprise server 15 SP6
3.4.4-150600.3.59.1
fixed
suse enterprise server 15 SP7
3.4.4-150600.3.59.1
fixed
typelib-1_0-Soup-3_0
suse enterprise desktop 15 SP7
3.4.4-150600.3.59.1
fixed
suse enterprise sap 15 SP4
3.0.4-150400.3.55.1
fixed
suse enterprise sap 15 SP5
3.0.4-150400.3.55.1
fixed
suse enterprise sap 15 SP6
3.4.4-150600.3.59.1
fixed
suse enterprise sap 15 SP7
3.4.4-150600.3.59.1
fixed
suse enterprise server 15 SP4
3.0.4-150400.3.55.1
fixed
suse enterprise server 15 SP5
3.0.4-150400.3.55.1
fixed
suse enterprise server 15 SP6
3.4.4-150600.3.59.1
fixed
suse enterprise server 15 SP7
3.4.4-150600.3.59.1
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
libsoup3
Amazon Linux 2023
0:3.7.3-1.amzn2023
fixed
libsoup3-debuginfo
Amazon Linux 2023
0:3.7.3-1.amzn2023
fixed
libsoup3-debugsource
Amazon Linux 2023
0:3.7.3-1.amzn2023
fixed
libsoup3-devel
Amazon Linux 2023
0:3.7.3-1.amzn2023
fixed
libsoup3-doc
Amazon Linux 2023
0:3.7.3-1.amzn2023
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
libsoup
Azure Linux 3.0
0:3.4.4-17.azl3
fixed
Common Weakness Enumeration
References
https://access.redhat.com/errata/RHSA-2026:83618
https://access.redhat.com/errata/RHSA-2026:93583
https://access.redhat.com/errata/RHSA-2026:98560
https://access.redhat.com/security/cve/CVE-2026-102555
https://bugzilla.redhat.com/show_bug.cgi?id=2543224