CVE-2026-102555
highA flaw was found in libsoup.
Vendor / product: Gnome — libsoup
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
8.2
8.2 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H Severity source: NVD CVSS v3.1 (secalert@redhat.com)
Timeline (UTC)
Published: 2026-09-29 18:17
Modified: 2026-10-15 17:17
NVD status: Modified
Last synced 2 days ago
Verified against the source API 2026-10-27 06:56 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
gnome / libsoup <3.7.3
redhat / enterprise_linux 9.0, 10.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://access.redhat.com/security/cve/CVE-2026-102555
Vendor advisory: https://bugzilla.redhat.com/show_bug.cgi?id=2543224
Patch / mitigation: https://access.redhat.com/security/cve/CVE-2026-102555
References
- https://access.redhat.com/errata/RHSA-2026:83618 secalert@redhat.com
- https://access.redhat.com/security/cve/CVE-2026-102555 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2543224 secalert@redhat.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:56 UTC · record ↗