Improper Handling of Highly Compressed Data (Data Amplification) Affecting open-webui package, versions <0.9.6-r5


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

Social Trends
EPSS
0.28% (20th percentile)

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  • Snyk IDSNYK-WOLFILATEST-OPENWEBUI-17671292
  • published29 Jun 2026
  • disclosed22 Jun 2026

Introduced: 22 Jun 2026

NewCVE-2026-54278  (opens in a new tab)
CWE-409  (opens in a new tab)

How to fix?

Upgrade Wolfi open-webui to version 0.9.6-r5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream open-webui package and not the open-webui package as distributed by Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, during cleanup it is possible for a compressed request body to be decompressed into memory in one chunk. An attacker may be able to send a compressed payload in specific situations that could be decompressed into memory, potentially leading to DoS (a zip bomb edge case). This vulnerability is fixed in 3.14.1.

CVSS Base Scores

version 3.1