Logging of Excessive Data Affecting aiohttp package, versions [,3.13.3)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.01% (3rd percentile)

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  • Snyk IDSNYK-PYTHON-AIOHTTP-14872000
  • published6 Jan 2026
  • disclosed5 Jan 2026
  • creditFin

Introduced: 5 Jan 2026

CVE-2025-69230  (opens in a new tab)
CWE-779  (opens in a new tab)

How to fix?

Upgrade aiohttp to version 3.13.3 or higher.

Overview

Affected versions of this package are vulnerable to Logging of Excessive Data via the cookies attribute. An attacker can generate excessive warning-level log entries by sending specially crafted Cookie headers.

References

CVSS Base Scores

version 4.0
version 3.1