Dashboard / CVE-2026-54428

CVE-2026-54428

HIGH
MEDIUM Priority: 0.07 BB Relevance: 75/100
Published: 2026-07-01 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

Description

Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows an remote attacker to cause a denial of service through memory exhaustion by sending oversized compressed header blocks before the HTTP/2 SETTINGS acknowledgement causes the configured header list size limit to be applied.

Weakness Classification (2)

Affected Software (3)

VendorProductVersion
apache httpcomponents_core 5.0 – 5.4.2
apache httpcomponents_core 5.5
apache httpcomponents_core 5.5

References & Advisories (2)

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.87%
Raw Score 0.008710
Percentile 58.8%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00871
2026-10-28
0.00871

Intelligence Sources

nvd ref →

External Links