VDB

RHSA-2026%3A25042

RHSA-2026%3A25042 PUBLISHED CVSS 7.5 HIGH

A flaw was found in HTTP/2, affecting various web servers. A remote attacker can exploit this vulnerability by combining an HPACK compression bomb with a zero-byte flow-control window. This technique allows a small amount of data to expand into large memory allocations on the server, which are then held, leading to a denial of service (DoS) by rendering the server inaccessible.

Risk Scores

CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

VendorProductVersions
Red Hathttpd-main@src as a component of Red Hat Hardened Images*
Red Hathttpd-main@noarch as a component of Red Hat Hardened Images*
Red Hathttpd-main@x86_64 as a component of Red Hat Hardened Images*
Red Hathttpd-main@aarch64 as a component of Red Hat Hardened Images*

Timeline

  • Jun 10, 2026 CVE Published
  • Jun 11, 2026 CVE Updated
  • Jun 11, 2026 Distribution Patch
  • Jun 11, 2026 Distribution Patch
  • Jun 11, 2026 Security Advisory
  • Jun 11, 2026 Security Advisory
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