CVE-2026-102555
Publication date 29 September 2026
Last updated 3 November 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| libsoup2.4 | 26.10 stonking |
Needs evaluation
|
| 26.04 LTS resolute |
Fixed in 2.74.3-10.1ubuntu5+esm4
|
|
| 24.04 LTS noble |
Fixed in 2.74.3-6ubuntu1.10
|
|
| 22.04 LTS jammy |
Fixed in 2.74.2-3ubuntu0.10
|
|
| 20.04 LTS focal |
Fixed in 2.70.0-1ubuntu0.5+esm5
|
|
| 18.04 LTS bionic |
Fixed in 2.62.1-1ubuntu0.4+esm10
|
|
| 16.04 LTS xenial |
Fixed in 2.52.2-1ubuntu0.3+esm9
|
|
| libsoup3 | 26.10 stonking |
Fixed in 3.6.6-1ubuntu3.1
|
| 26.04 LTS resolute |
Fixed in 3.6.6-1ubuntu0.2
|
|
| 24.04 LTS noble |
Fixed in 3.4.4-5ubuntu0.10
|
|
| 22.04 LTS jammy |
Fixed in 3.0.7-0ubuntu1+esm10
|
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CVSS version: CVSS v3.0
Base score
8.2 · High
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
References
Related Ubuntu Security Notices (USN)
- USN-8975-1
- libsoup vulnerabilities
- 3 November 2026