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Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

Red HatCVE-2026-15713

Red Hat libsoup: denial of service

Red Hat

CVE-2026-15713 · Published Jul 14, 2026 · updated Nov 6, 2026

Medium5.9
No fix yet
Red Hat advisory

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.

Affected versions

PackageAffectedFixed in
Red Hat Enterprise Linux 10
Product
all versionsNo fix yet
Red Hat Enterprise Linux 6
Product
all versionsNo fix yet
Red Hat Enterprise Linux 7
Product
all versionsNo fix yet
Red Hat Enterprise Linux 8
Product
all versionsNo fix yet
Red Hat Enterprise Linux 9
Product
all versionsNo fix yet
Details and references

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