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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | libsoup3 +1 | No fix yet | — |
| Debian 12 | libsoup3 +1 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | libsoup2.4 | No fix yet | — |
| Ubuntu 25.10 | libsoup3 | 3.6.5-4ubuntu0.2 | USN-8020-1 |
| Ubuntu 24.04 LTS | libsoup3 | 3.4.4-5ubuntu0.7 | USN-8020-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | libsoup3 | 3.0.7-0ubuntu1+esm7 | USN-8020-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | libsoup | 3.4.4-150600.3.31.1 | SUSE-SU-2026:0431-1 |
| SLES 15 SP6 | libsoup | 3.4.4-150600.3.31.1 | SUSE-SU-2026:0431-1 |
| SLES 15 SP5 | libsoup | 3.0.4-150400.3.31.1 | SUSE-SU-2026:0579-1 |
| SLES 15 SP4 | libsoup | 3.0.4-150400.3.31.1 | SUSE-SU-2026:0579-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | libsoup | 3.6.5-160000.4.1 | SUSE-SU-2026:20339-1 |
| SLES for SAP 15 SP6 | libsoup | 3.4.4-150600.3.31.1 | SUSE-SU-2026:0431-1 |
| SLES for SAP 15 SP5 | libsoup | 3.0.4-150400.3.31.1 | SUSE-SU-2026:0579-1 |
| SLES for SAP 15 SP4 | libsoup | 3.0.4-150400.3.31.1 | SUSE-SU-2026:0579-1 |
| SLES 16.0 | libsoup | 3.6.5-160000.4.1 | SUSE-SU-2026:20339-1 |
| SLE Micro 6.2 | libsoup | 3.6.5-160000.4.1 | SUSE-SU-2026:20238-1 |
| SLE Micro 6.1 | libsoup | 3.4.4-slfo.1.1_7.1 | SUSE-SU-2026:20649-1 |
| SLE Micro 6.0 | libsoup | 3.4.2-12.1 | SUSE-SU-2026:20445-1 |
| SLE HPC 15 SP5 | libsoup | 3.0.4-150400.3.31.1 | SUSE-SU-2026:0579-1 |
| SLE HPC 15 SP4 | libsoup | 3.0.4-150400.3.31.1 | SUSE-SU-2026:0579-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libsoup | 3.6.5-12.1 | openSUSE-SU-2026:10139-1 |
| openSUSE Leap 16.0 | libsoup | 3.6.5-160000.4.1 | openSUSE-SU-2026:20186-1 |
| openSUSE Leap 15.6 | libsoup | 3.4.4-150600.3.31.1 | SUSE-SU-2026:0431-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | libsoup3 +2 | 3.6.5-56.amzn2023 | ALAS2023-2026-1460 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | libsoup | 3.4.4-12 | — |
| Azure Linux 2 (CBL-Mariner) | libsoup | 3.0.4-12 | — |
Advisories 10
- USN-8020-1 libsoup3 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- openSUSE-SU-2026:20186-1 Security update for libsoup SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2026:10139-1 libsoup-3_0-0-3.6.5-12.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20339-1 Security update for libsoup SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20649-1 Security update for libsoup SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20445-1 Security update for libsoup SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20238-1 Security update for libsoup SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0579-1 Security update for libsoup SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0431-1 Security update for libsoup SUSE / openSUSE Security Updates · Mar 23, 2026
- ALAS2023-2026-1460 Important: libsoup3 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Mar 5, 2026