PYSEC-2026-2104

Vulnerability from pysec - Published: 2026-06-02 20:16 - Updated: 2026-07-13 05:47
VLAI
Details

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.14.0, using CookieJar.load() with untrusted input may allow arbitrary code execution. Most applications using this function will be doing so with the user's own data, so this is unlikely to affect many applications. Version 3.14.0 patches the issue. If an application does allow attacker controlled files to be loaded, a workaround on older releases would be to sanitize the files before loading.

Severity
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Impacted products
Name purl
aiohttp pkg:pypi/aiohttp
Aliases
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {},
      "package": {
        "ecosystem": "PyPI",
        "name": "aiohttp",
        "purl": "pkg:pypi/aiohttp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.14.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.1",
        "0.10.0",
        "0.10.1",
        "0.10.2",
        "0.11.0",
        "0.12.0",
        "0.13.0",
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        "0.15.1",
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        "3.11.4",
        "3.11.5",
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        "3.6.3",
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        "3.7.0b0",
        "3.7.0b1",
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        "3.7.3",
        "3.7.4",
        "3.7.4.post0",
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        "3.8.0a7",
        "3.8.0b0",
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        "3.8.2",
        "3.8.3",
        "3.8.4",
        "3.8.5",
        "3.8.6",
        "3.9.0",
        "3.9.0b0",
        "3.9.0b1",
        "3.9.0rc0",
        "3.9.1",
        "3.9.2",
        "3.9.3",
        "3.9.4",
        "3.9.4rc0",
        "3.9.5"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-34993",
    "GHSA-jg22-mg44-37j8"
  ],
  "details": "AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.14.0, using ``CookieJar.load()`` with untrusted input may allow arbitrary code execution. Most applications using this function will be doing so with the user\u0027s own data, so this is unlikely to affect many applications. Version 3.14.0 patches the issue. If an application does allow attacker controlled files to be loaded, a workaround on older releases would be to sanitize the files before loading.",
  "id": "PYSEC-2026-2104",
  "modified": "2026-07-13T05:47:35.265041Z",
  "published": "2026-06-02T20:16:34.857Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-34993"
    },
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34993.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:24977"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:34456"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:37275"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2484099"
    },
    {
      "type": "FIX",
      "url": "https://github.com/aio-libs/aiohttp/commit/dcf40f30637e8752c76781cf6703b5a236749a00"
    },
    {
      "type": "FIX",
      "url": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jg22-mg44-37j8"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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