Security advisory

{
  "id": "efd5c4d9b9c94b05284ce9277fb7d4a8266be46b09fe6c669edfea3a963d8011",
  "url": "https://osv.dev/vulnerability/CVE-2018-1000519",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-1000519",
    "summary": "aio-libs aiohttp-session contains a Session Fixation vulnerability in load_session function for RedisStorage (see: https://github.com/aio-libs/aiohttp-session/blob/master/aiohttp_session/redis_storage.py#L42) that can result in Session Hijacking. This attack appear to be exploitable via Any method that allows setting session cookies (?session=<>, or meta tags or script tags with Set-Cookie).",
    "evidence": "osv:CVE-2018-1000519",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2018-1000519",
      "aliases": [
        "CVE-2018-1000519",
        "GHSA-fpwp-69xv-c67f",
        "PYSEC-2018-80"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/aio-libs/aiohttp-session",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "fb095051cb9e1f4c121270ae2ddc6c893cdd192f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:aio-libs:aiohttp_session:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.4.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.3.0",
            "v2.2.0",
            "v2.1.0",
            "v2.0.1",
            "v2.0.0",
            "v1.2.1",
            "v1.2.0",
            "v1.1.0",
            "v1.0.1",
            "v1.0.0",
            "v0.8.0",
            "v0.7.1",
            "v0.7.0",
            "v0.6.0",
            "v0.4.0",
            "v0.5.0",
            "v0.3.0",
            "v0.2.0",
            "v0.1.2",
            "v0.1.1",
            "v0.1.0",
            "v0.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-1000519.json"
          }
        }
      ],
      "modified": "2026-10-20T10:49:40.018368415Z",
      "provider": "osv",
      "references": [
        "https://github.com/aio-libs/aiohttp-session/blob/master/aiohttp_session/redis_storage.py#L60",
        "https://github.com/aio-libs/aiohttp-session/issues/272"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-1000519",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 380652,
  "published_at": "2018-06-26T16:29:01.307+00:00"
}