CVE-2026-1536
Publication date 28 January 2026
Last updated 9 February 2026
Ubuntu priority
Description
A flaw was found in libsoup. An attacker who can control the input for the Content-Disposition header can inject CRLF (Carriage Return Line Feed) sequences into the header value. These sequences are then interpreted verbatim when the HTTP request or response is constructed, allowing arbitrary HTTP headers to be injected. This vulnerability can lead to HTTP header injection or HTTP response splitting without requiring authentication or user interaction.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| libsoup2.4 | 25.10 questing |
Needs evaluation
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
|
| libsoup3 | 25.10 questing |
Fixed 3.6.5-4ubuntu0.2
|
| 24.04 LTS noble |
Fixed 3.4.4-5ubuntu0.7
|
|
| 22.04 LTS jammy |
Fixed 3.0.7-0ubuntu1+esm7
|
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| Parameter | Value |
|---|---|
| Base score |
5.8 · Medium
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Changed |
| Confidentiality | None |
| Integrity impact | Low |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N |
References
Related Ubuntu Security Notices (USN)
- USN-8020-1
- libsoup vulnerabilities
- 8 February 2026