CVE-2026-102555

highpriority · track · 0EPSS 0.004 · 31 %ileUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.37% (31st) EPSS

CVSS 8.2 · high

Is it mine?

3 products

Check your exposure

Who says so?

1 sources

nvd

EPSS · scored 2026-10-28

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.2

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Hsecondary · secalert@redhat.com USexploitability 3.9 · impact 4.2

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125US

affected products (3)

Products and version ranges known to be affected.

gnome libsoup< 3.7.3nvdUScpe:2.3:a:gnome:libsoup:*:*:*:*:*:*:*:*
redhat enterprise linux= 10.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
redhat enterprise linux= 9.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*

sources

Which sources assert this record, and when.

nvd NVD CVE.org MITRE

published 2026-09-29modified 2026-10-15

references (3) nvd

External citations — patches, advisories, analysis.

https://access.redhat.com/errata/RHSA-2026:83618
https://access.redhat.com/security/cve/CVE-2026-102555MitigationVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2543224Issue TrackingVendor Advisory

scry

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