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Oracle Critical Patch Update October 2026

Released October 2026 · Oracle's advisory ↗ · ← Security Patch Update, September 2026

1,693 CVEs in this release, one square each

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Share this chart Oracle Critical Patch Update October 2026, one square per CVE: 1,131 Java CVEs, 21 protected by Waratek, 5 exploited, 562 other CVEs in this release.

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By status

21Protected by Waratek1Mitigation candidate1,109No exploit published13Outside Waratek scope549Not applicable 5Exploited, marked by the ring

No exploit published. For 858 of them, Oracle's security advisory is the source of public detail.

Protected by Waratek. Waratek RASP can block exploitation of these on systems that have not applied the patch yet.

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Including CVEs outside Waratek scope✕Has a public PoC✕
Overview 3 matches · 1 in Waratek scope · 1 protected · 0 exploited · 0 CISA KEV · 0 EPSS ≥ 0.5
3matches 1in Waratek scope33.3% 1protected33.3% 0exploited0.0% 0CISA KEV0.0% 0EPSS ≥ 0.50.0%
Protected by Waratek 1 33.3% Rule in development 0 0.0% Mitigation candidate 0 0.0% No exploit published 0 0.0% Outside Waratek scope 0 0.0% Not applicable 2 66.7% Withdrawn CVE 0 0.0%
Critical 0 0.0% High 0 0.0% Medium 3 100.0% Low 0 0.0% None 0 0.0% Unknown 0 0.0%
blocked by ARMR today 1 33.3% partly blocked 0 0.0% not blocked 2 66.7% not established 0 0.0% unrecorded 0 0.0%
Exploited 0 0.0% Working exploit published 1 33.3% Proof of concept only 2 66.7% Forecast only 0 0.0% No public exploit 0 0.0%
split by peak 1 / month
Not applicable: 2Protected by Waratek: 1 Medium: 3 not blocked: 2blocked by ARMR today: 1 Proof of concept only: 2Working exploit published: 1
Mar 261 Not applicable1 Medium1 not blocked1 Proof of concept only1 Apr 261 Not applicable1 Medium1 not blocked1 Proof of concept only1 May 260 Jun 261 Protected by Waratek1 Medium1 blocked by ARMR today1 Working exploit published1
Mar 26Apr 26May 26Jun 26
3 matches Sign in to download these CVEs as CSV or JSON, or to follow them in a feed.
CVE Severity Published▾ Status Exploitation Description
CVE-2026-50229 Medium 2026-06-29 Protected by Waratek Working exploit published Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in the number guess example for Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.
CVE-2026-34835 Medium 2026-04-02 Not applicable Proof of concept only Rack is a modular Ruby web server interface. From versions 3.0.0.beta1 to before 3.1.21, and 3.2.0 to before 3.2.6, Rack::Request parses the Host header using an AUTHORITY regular expression that accepts characters not permitted in RFC-compliant hostnames, including /, ?, #, and @. Because req.host returns the full parsed value, applications that validate hosts using naive prefix or suffix checks can be bypassed. This can lead to host header poisoning in applications that use req.host, req.url, or req.base_url for link generation, redirects, or origin validation. This issue has been patched in versions 3.1.21 and 3.2.6.
CVE-2026-20643 Medium 2026-03-17 Not applicable Proof of concept only A cross-origin issue in the Navigation API was addressed with improved input validation. This issue is fixed in Background Security Improvements for iOS, iPadOS, and macOS, Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4. Processing maliciously crafted web content may bypass Same Origin Policy.