# CVE-2026-101677: Oracle MySQL Connector/J data integrity compromise via network

Source: https://junglewise.ai/threats/cve-2026-101677-vulnerability-in-the-mysql-connectors-product-of-oracle-mysql  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-20. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2026-101677 · Severity: medium · CVSS 4.3 · Published 2026-10-20

Oracle MySQL Connector/J is a Java library that allows applications to connect to MySQL databases. An unauthenticated attacker can exploit a flaw in version 26.7.0 to modify database records (insert, update, or delete) through social engineering, compromising data integrity without needing valid credentials. The vulnerability requires user interaction but poses a direct risk to data stored in MySQL databases.

Technologies: [Oracle Mysql Connector\/J](https://junglewise.ai/threats/technologies/mysql-connector-j). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-101677 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-101677 being exploited in the wild.

**How severe is CVE-2026-101677?** Medium severity, with a CVSS score of 4.3, published 20 October 2026.

**Which products and versions are affected?** Oracle Mysql Connector\/J 26.7.0.

**Is there a fix for CVE-2026-101677?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-101677 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-101677?** Check whether you run Oracle Mysql Connector\/J at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An easily exploitable network-accessible vulnerability in MySQL Connector/J 26.7.0 allows unauthenticated attackers to perform unauthorized data modification (insert, update, delete) with user interaction. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N) indicates low attack complexity via network with no privileges required, but human interaction is necessary. The vulnerability impacts data integrity only, with no confidentiality or availability impact.

## Affected products

- Oracle MySQL Connector/J 26.7.0

## Timeline

- 2026-10-20: disclosed

## References

- [https://www.oracle.com/security-alerts/cpuoct2026.html](https://www.oracle.com/security-alerts/cpuoct2026.html)

## Related threats

- [Oracle MySQL Connector/J remote code execution](https://junglewise.ai/threats/cve-2026-101768-vulnerability-in-the-mysql-connectors-product-of-oracle-mysql)
- [Oracle MySQL Connector/J denial of service](https://junglewise.ai/threats/cve-2026-101678-vulnerability-in-the-mysql-connectors-product-of-oracle-mysql)