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build(deps): bump pymysql from 1.1.1 to 1.2.3 - #497

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build(deps): bump pymysql from 1.1.1 to 1.2.3#497
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Bumps pymysql from 1.1.1 to 1.2.3.

Release notes

Sourced from pymysql's releases.

v1.2.3

Full Changelog: PyMySQL/PyMySQL@v1.2.2...v1.2.3

v1.2.2

Restored the ability to import pymysql.converters.escape_dict for compatibility with aiomysql. This function does not escape dictionaries and is entirely unnecessary. Unless you use aiomysql, there is no need to upgrade from v1.2.1.

Full Changelog: PyMySQL/PyMySQL@v1.2.1...v1.2.2

v1.2.1

What's Changed

New Contributors

Full Changelog: PyMySQL/PyMySQL@v1.2.0...v1.2.1

v1.2.0

What's Changed

New Contributors

... (truncated)

Changelog

Sourced from pymysql's changelog.

v1.2.3

Release date: 2026-09-17

Restored the ability to import pymysql.converters.escape_bytes_prefixed for compatibility with aiomysql.

Use pymysql.converters at your own risk. It's internal functions. No backward compatibility are guaranteed.

v1.2.2

Release date: 2026-09-17

Restored the ability to import pymysql.converters.escape_dict for compatibility with aiomysql. This function does not escape dictionaries and is entirely unnecessary. Unless you use aiomysql, there is no need to upgrade from v1.2.1.

v1.2.1 (security fix)

Release date: 2026-09-17

Fixed a SQL injection vulnerability caused by incorrect escaping of bytes parameters when using the big5, gbk, sjis, cp932, or gb18030 character sets. This vulnerability also occurs when strings decoded from bytes using surrogateescape are passed as query parameters.

See also: https://github.com/PyMySQL/PyMySQL/security/advisories/GHSA-x4f8-9hx9-hpp9

  • Queries are now encoded using the strict error handler instead of surrogateescape. Queries that cannot be encoded using the connection encoding can no longer be sent.

  • bytes parameters are now always sent as hexadecimal literals, such as X'636174'. Note that this increases the number of bytes sent.

  • The binary_prefix parameter of connect() is deprecated. The _binary prefix is no longer sent.

These changes address the confirmed SQL injection vulnerabilities related to character encoding. However, we strongly recommend using UTF-8 (utf8mb4). Other character sets are not thoroughly tested, and their limited use means that problems may go unreported. In the 2020s, encodings other than UTF-8 should be considered legacy.

v1.2.0

... (truncated)

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Note

Medium Risk
Upgrades the MySQL client library with security and parameter-encoding behavior changes; runtime DB paths should be validated even though only version pins changed.

Overview
Bumps PyMySQL from 1.1.1 to 1.2.3 in requirements.txt and setup.py so installs pick up the newer driver (including the 1.2.1 security fix for SQL injection with certain character sets and bytes parameters).

No application code changes in this PR. The pool already depends on PyMySQL indirectly through aiomysql and registers a custom uint64 encoder on pymysql.converters in mariadb_store.py; reviewers may want a quick smoke test against MariaDB/MySQL after upgrade.

Reviewed by Cursor Bugbot for commit 5e385d4. Bugbot is set up for automated code reviews on this repo. Configure here.

@dependabot
build(deps): bump pymysql from 1.1.1 to 1.2.3
5e385d4 
Bumps [pymysql](https://github.com/PyMySQL/PyMySQL) from 1.1.1 to 1.2.3.
- [Release notes](https://github.com/PyMySQL/PyMySQL/releases)
- [Changelog](https://github.com/PyMySQL/PyMySQL/blob/main/CHANGELOG.md)
- [Commits](PyMySQL/PyMySQL@v1.1.1...v1.2.3)

---
updated-dependencies:
- dependency-name: pymysql
  dependency-version: 1.2.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot Bot added Changed Required label for PR that categorizes merge commit message as "Changed" for changelog dependencies Pull requests that update a dependency file python Pull requests that update Python code labels Oct 8, 2026
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socket-security Bot commented Oct 8, 2026

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Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff Package Supply Chain
Security		 Vulnerability Quality Maintenance License
Updatedpypi/​pymysql@​1.1.1 ⏵ 1.2.3100 +1100100100100

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