CVE-2026-102555
This can lead to an out-of-bounds read or application crash when processing a crafted data URI.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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 3.1
- 8.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
- EPSS
- 0.37% probability · 31th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- gnome/libsoup · redhat/enterprise linux
- Source
- secalert@redhat.com
EPSS moved from 0.3% on 30 September 2026 to 0.4% on 26 October 2026.
References
- https://access.redhat.com/errata/RHSA-2026:83618
- https://access.redhat.com/security/cve/CVE-2026-102555Mitigation, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2543224Issue Tracking, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.