BackendSource: Oracle

Oracle releases 1,295 security patches across Java SE, MySQL and other products

Oracle’s October 20, 2026, Critical Patch Update includes 55 Java SE patches and 98 MySQL patches. Both products have flaws that Oracle says may be exploited remotely without authentication.

By News DeskPublished here Wed, Oct 21, 2026, 3:19 PM UTC (UTC)1 min read

Oracle released 1,295 new security patches on October 20, 2026, covering Java SE, MySQL, SQL Developer, REST Data Services and other product families. The company urged customers to apply applicable updates promptly. Sources: Oracle

Java SE received 55 patches, with 49 vulnerabilities potentially exploitable remotely without authentication, according to Oracle’s advisory. MySQL received 98 patches, with 29 vulnerabilities in that category. The overall patch total does not count unique vulnerabilities because the same vulnerability can appear in multiple product matrices. Sources: Oracle

REST Data Services received 35 patches, covering 11 vulnerabilities potentially exploitable remotely without authentication. Its listed affected versions span 24.2.0–26.2.2. SQL Developer received one new patch plus additional third-party patches, with affected versions spanning 23.1.1–26.1.0. Sources: Oracle

CyberStack’s October 15, 2026, advance report listed 1,283 planned patches and warned that the figures could change before release. Oracle’s final advisory lists 12 more patches than that preliminary total. Sources: Oracle, CyberStack

What to do

Check deployed Java SE versions against Oracle’s affected-release list, which includes 8u503, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 26.0.2 and 27.
Check REST Data Services 24.2.0–26.2.2 and SQL Developer 23.1.1–26.1.0 installations against the advisory, then consult Oracle’s product-specific patch-availability documents for applicable updates. Sources: Oracle

Why it matters

The update calls for patch planning across application runtimes, databases and developer tools. The listed versions identify affected installations; use Oracle’s product-specific guidance to select applicable updates.

Attribution

Sources

1OracleOctober 2026 Critical Patch Update ReleasedSource published Tue, Oct 20, 2026, 12:00 AM UTC (UTC)
2OracleOracle Critical Patch Update Advisory - October 2026Source published Tue, Oct 20, 2026, 12:00 AM UTC (UTC)
3CyberStackOracle October 2026 Critical Patch Update lands Tuesday 20 OctoberSource published Thu, Oct 15, 2026, 12:00 AM UTC (UTC)

Read the original source for full details and context.

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