CVE-2026-102555 libsoup - Out of Bounds Read

libsoup contains an out-of-bounds read caused by incorrect handling of base64 data-URI payloads with embedded NUL bytes in soup_uri_decode_data_uri(), letting attackers cause application crashes, exploit requires crafted data URI.

CVSS base score 8.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.32% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Out of Bounds Read
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Published
29 September 2026
Updated
15 October 2026
Weakness
CWE-125

Vendor fix

Update to the latest version of libsoup.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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