CVE-2026-2369 Libsoup: libsoup: buffer overread due to integer underflow when handling zero-length resources
An integer underflow in libsoup allows attackers to trigger buffer overreads, potentially exposing sensitive data or causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-2369?
CVE-2026-2369 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 19 Mar 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 integer underflow vulnerability occurs when processing content with a zero-length resource, leading to a buffer overread. This can allow an attacker to potentially access sensitive information or cause an application level denial of service.
Weakness: CWE-191
Which versions are affected by CVE-2026-2369?
It affects 1 product.
Products include Gnome Libsoup.
How do I fix CVE-2026-2369?
Apply the vendor's patch.
Is CVE-2026-2369 being exploited?
There is no known exploitation of CVE-2026-2369 in the wild and no public exploit code.
Other vulnerabilities in Red Hat Enterprise Linux 10
- 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-80412, CLSA-2026-1777569045, CLSA-2026-1777659767, CLSA-2026-1778662869, CLSA-2026-1778772686, CLSA-2026-1778944149 and 6 more.