Allocation of Resources Without Limits or Throttling Affecting aiohttp package, versions [,3.14.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published16 Jun 2026
- disclosed15 Jun 2026
- creditDenys Pakizh
Introduced: 15 Jun 2026
NewCVE-2026-54277 (opens in a new tab)How to fix?
Upgrade aiohttp to version 3.14.1 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the C HTTP parser when the max_line_size check is bypassed for fragmented lines. An attacker can cause excessive memory consumption by sending oversized HTTP request lines, potentially resulting in resource exhaustion and service disruption.