CVE-2026-1536 Libsoup: libsoup: http header injection or response splitting via crlf injection in content-disposition header
Attackers can inject CRLF sequences into Content-Disposition headers to perform HTTP header injection or response splitting in applications using libsoup.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-1536?
CVE-2026-1536 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 28 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-93
Which versions are affected by CVE-2026-1536?
It affects 2 products.
Products include Gnome Libsoup, Redhat Enterprise Linux.
How do I fix CVE-2026-1536?
Upgrade to a fixed version.
Is CVE-2026-1536 being exploited?
There is no known exploitation of CVE-2026-1536 in the wild and no public exploit code.
Other vulnerabilities in Redhat Enterprise Linux
- CVE-2026-102556 Libsoup: libsoup: heap buffer overflow from websocket pong signal type confusion
- CVE-2026-102557 Libsoup: libsoup: heap buffer overflow during websocket message reassembly
- CVE-2026-102558 Libsoup: libsoup: heap buffer overflow during websocket receive-buffer growth
- CVE-2026-102559 Libsoup: libsoup: heap buffer overflow during websocket client-frame masking
- CVE-2026-102560 Libsoup: libsoup: heap buffer overflow during outgoing permessage-deflate buffer growth
Sources
Also known as AZL-76370, AZL-76395, DEBIAN-CVE-2026-1536, ECHO-43e7-f704-3e0e, GHSA-x4cc-vgcc-h5h4, UBUNTU-CVE-2026-1536.