PT-2026-58724 · Red Hat · Red Hat Enterprise Linux 10+4

Published 2026-07-14 · Updated 2026-07-14 · CVE-2026-15713

Mitre

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

A vulnerability was found in libsoup's HTTP/2 protocol implementation. The library fails to correctly release memory context blocks under specific stream termination conditions, such as when an HTTP/2 connection encounters window exhaustion or explicit stream resets. A remote, unauthenticated attacker acting as a malicious network peer can trick the connection engine into allocating stream states that are subsequently leaked during cleanup. Over a sustained period, this flaw allows the remote attacker to consume the system's heap allocations incrementally, triggering a denial of service (DoS) through an ultimate Out-of-Memory (OOM) application crash.

Fix

Missing Release of Resource after Effective Lifetime

Weakness Enumeration

CWE-772

Related Identifiers

CVE-2026-15713

Affected Products

Red Hat Enterprise Linux 10

Red Hat Enterprise Linux 6

Red Hat Enterprise Linux 7

Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 9

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-15713 · Security Note
• https://access.redhat.com/security/cve/CVE-2026-15713 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2499941 · Note
• https://gitlab.gnome.org/GNOME/libsoup/-/work_items/541 · Note