Oracle Critical Security Patch Update Advisory - May 2026

Description

A Critical Security Patch Update (CSPU) provides targeted, high-priority security fixes in a smaller, more focused format, making them easier to apply with minimal disruption. Critical Security Patch Updates complement Oracle’s existing quarterly cumulative Critical Patch Updates (CPUs). These patches address vulnerabilities in Oracle code and in third party components included in Oracle products. Prior Critical Patch Update and Critical Security Patch Update advisories should be reviewed for information regarding earlier published security patches. Refer to Critical Patch Updates, Critical Security Patch Updates, Security Alerts and Bulletins for information about Oracle Security advisories.

Oracle continues to periodically receive reports of attempts to maliciously exploit vulnerabilities for which Oracle has already released security patches. In some instances, it has been reported that attackers have been successful because targeted customers had failed to apply available Oracle patches. Oracle therefore strongly recommends that customers remain on actively-supported versions and apply security patches without delay.

This Critical Security Patch Update contains 35 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Security Patch Update and other Oracle Software Security Assurance activities is located at May 2026 Critical Security Patch Update: Executive Summary and Analysis.

Affected Products and Patch Information

Security vulnerabilities addressed by this Critical Security Patch Update affect the products listed below.

Please click on the links in the Patch Availability Document column below to access the documentation for patch availability information and installation instructions.

Risk Matrix Content

Risk matrices list only security vulnerabilities that are newly addressed by the patches associated with this advisory. Risk matrices for previous security patches can be found in previous Critical Patch Update advisories, Critical Security Patch Update advisories and Alerts. An English text version of the risk matrices provided in this document is here.

Several vulnerabilities addressed in this Critical Security Patch Update affect multiple products. Each vulnerability is identified by a CVE ID. A vulnerability that affects multiple products will appear with the same CVE ID in all risk matrices.

Security vulnerabilities are scored using CVSS version 3.1 (see Oracle CVSS Scoring for an explanation of how Oracle applies CVSS version 3.1).

Oracle conducts an analysis of each security vulnerability addressed by a Critical Security Patch Update. Oracle does not disclose detailed information about this security analysis to customers, but the resulting Risk Matrix and associated documentation provide information about conditions required to exploit the vulnerability and the potential impact of a successful exploit. Oracle provides this information so that customers may conduct their own risk analysis based on the particulars of their product usage. For more information, see Oracle vulnerability disclosure policies.

Third party component vulnerabilities that are deemed not exploitable in the context of their inclusion in an Oracle product are listed, with VEX justifications, below the respective Oracle product's risk matrix.

The protocol in the risk matrix implies that all of its secure variants are affected as well. For example, if HTTP is listed as an affected protocol, it implies that HTTPS is also affected. The secure variant of a protocol is listed in the risk matrix only if it is the only variant affected.

Workarounds

Due to the threat posed by a successful attack, Oracle strongly recommends that customers apply Critical Security Patch Update security patches as soon as possible. Until you apply the Critical Security Patch Update patches, it may be possible to reduce the risk of successful attack by blocking network protocols required by an attack. For attacks that require certain privileges or access to certain packages, removing the privileges or the ability to access the packages from users that do not need the privileges may help reduce the risk of successful attack. Both approaches may break application functionality, so Oracle strongly recommends that customers test changes on non-production systems. Neither approach should be considered a long-term solution as neither corrects the underlying problem.

Skipped Security Patch Updates

Oracle strongly recommends that customers apply security patches as soon as possible. For customers that have skipped one or more security patch updates and are concerned about products that do not have security patches announced in this Critical Security Patch Update, please review previous Critical Patch Update and Critical Security Patch Update advisories to determine appropriate actions.

Critical Security Patch Update Supported Products and Versions

Patches released through the Critical Security Patch Update program are provided only for product versions that are covered under the Premier Support or Extended Support phases of the Lifetime Support Policy. Oracle recommends that customers plan product upgrades to ensure that patches released through the Critical Security Patch Update program are available for the versions they are currently running.

Product releases that are not under Premier Support or Extended Support are not tested for the presence of vulnerabilities addressed by this Critical Security Patch Update. However, it is likely that earlier versions of affected releases are also affected by these vulnerabilities. As a result, Oracle recommends that customers upgrade to supported versions.

Database, Fusion Middleware, and Oracle Enterprise Manager products are patched in accordance with the Software Error Correction Support Policy that further supplements the Lifetime Support Policy as explained in My Oracle Support Note KB65129. Please review the Technical Support Policies for further guidelines regarding support policies and phases of support.

Credit Statement

The following people or organizations reported security vulnerabilities addressed by this Critical Security Patch Update to Oracle:

• Alex Lee of PwC HK Darklab: CVE-2026-34311
• HexRabbit of DEVCORE Research Team: CVE-2026-46833
• Johnathan Law of PwC HK Darklab: CVE-2026-34311
• Le Duc Anh Vu (vulda1) of Viettel Cyber Security: CVE-2026-46839
• Xchglabs: CVE-2026-46829, CVE-2026-46830, CVE-2026-46840, CVE-2026-46841, CVE-2026-46842, CVE-2026-46843

Security-In-Depth Contributors

Oracle acknowledges people who have contributed to our Security-In-Depth program (see FAQ). People are acknowledged for Security-In-Depth contributions if they provide information, observations or suggestions pertaining to security vulnerability issues that result in significant modification of Oracle code or documentation in future releases, but are not of such a critical nature that they are distributed in Critical Security Patch Updates.

In this Critical Security Patch Update, Oracle recognizes the following for contributions to Oracle's Security-In-Depth program:

• Xchglabs

Upcoming Security Release Dates

Security patches are released on the third Tuesday of each month, except the initial May CSPU release. The next four dates are:

• 16 June 2026 (CSPU)
• 21 July 2026 (CPU)
• 18 August 2026 (CSPU)
• 15 September 2026 (CSPU)

References

• Oracle Critical Patch Updates, Critical Security Patch Updates, Security Alerts and Bulletins
• Oracle Critical Patch Updates, Critical Security Patch Updates and Security Alerts - Frequently Asked Questions
• Risk Matrix Definitions
• Use of Common Vulnerability Scoring System (CVSS) by Oracle
• English text version of the risk matrices
• CSAF JSON version of the risk matrices
• Map of CVE to Advisory/Alert
• Oracle Lifetime Support Policy
• JEP 290 Reference Blocklist Filter

 

Modification History

 

Oracle Database Products Risk Matrices

This Critical Security Patch Update contains 14 new security patches for Oracle Database Products divided as follows:

• 3 new security patches for Oracle Database Products
• 11 new security patches for Oracle REST Data Services

 

Oracle Database Server Risk Matrix

This Critical Security Patch Update contains 3 new security patches for Oracle Database Products.  All of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a network without requiring user credentials.  All of these patches are applicable to client-only installations, i.e., installations that do not have the Oracle Database Server installed. The English text form of this Risk Matrix can be found here.

Notes:

1. These patches need to be applied to all 23.x Oracle Homes, including Database, Grid and Client. Earlier versions are not vulnerable to these issues. Note that databases running earlier versions are vulnerable if running under 23.x Grid until the 23.x Grid is patched.

Oracle Database Server Client-Only Installations

• The following Oracle Database Server vulnerabilities included in this Critical Security Patch Update affect client-only installations: CVE-2026-46833, CVE-2026-46834 and CVE-2026-46835.

Oracle REST Data Services Risk Matrix

This Critical Security Patch Update contains 11 new security patches, plus additional third party patches noted below, for Oracle REST Data Services.  7 of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a network without requiring user credentials.  The English text form of this Risk Matrix can be found here.

Additional CVEs addressed are:

• The patch for CVE-2026-2332 also addresses CVE-2026-5795.

Additional patches included for the following non-exploitable CVEs for this Oracle product family:

• Oracle REST Data Services
  • Core (Lodash): CVE-2026-4800, CVE-2025-13465 and CVE-2026-2950 [VEX Justification: vulnerable_code_not_in_execute_path].

 

Oracle Communications Risk Matrix

This Critical Security Patch Update contains 8 new security patches for Oracle Communications.  4 of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a network without requiring user credentials.  The English text form of this Risk Matrix can be found here.

Additional CVEs addressed are:

• The patch for CVE-2026-41044 also addresses CVE-2026-40466 and CVE-2026-41043.
• The patch for CVE-2025-15467 also addresses CVE-2025-14017, CVE-2026-21998, CVE-2026-22001, CVE-2026-22002, CVE-2026-22004, CVE-2026-22005, CVE-2026-22009, CVE-2026-22015, CVE-2026-22017, CVE-2026-34270, CVE-2026-34271, CVE-2026-34276, CVE-2026-34303, CVE-2026-34304, CVE-2026-34308, CVE-2026-35236, CVE-2026-35237, CVE-2026-35238, CVE-2026-35239, and CVE-2026-35240.
• The patch for CVE-2026-33557 also addresses CVE-2026-35554.
• The patch for CVE-2026-34059 also addresses CVE-2026-23918, CVE-2026-24072, CVE-2026-28780, CVE-2026-29168, CVE-2026-29169, CVE-2026-33006, CVE-2026-33007, CVE-2026-33523, CVE-2026-33857, and CVE-2026-34032.
• The patch for CVE-2026-24308 also addresses CVE-2026-24281.
• The patch for CVE-2026-34487 also addresses CVE-2026-29145, CVE-2026-34483, CVE-2026-34486, and CVE-2026-34500.

 

Oracle E-Business Suite Risk Matrix

This Critical Security Patch Update contains 12 new security patches for Oracle E-Business Suite.  3 of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a network without requiring user credentials.  The English text form of this Risk Matrix can be found here.

Oracle E-Business Suite products include Oracle Database and Oracle Fusion Middleware components that are affected by the vulnerabilities listed in the Oracle Database and Oracle Fusion Middleware sections. The exposure of Oracle E-Business Suite products is dependent on the Oracle Database and Oracle Fusion Middleware versions being used. Oracle Database and Oracle Fusion Middleware security updates are not listed in the Oracle E-Business Suite risk matrix. However, since vulnerabilities affecting Oracle Database and Oracle Fusion Middleware versions may affect Oracle E-Business Suite products, Oracle recommends that customers apply the May 2026 Critical Security Patch Update to the Oracle Database and Oracle Fusion Middleware components of Oracle E-Business Suite. For information on what patches need to be applied to your environments, refer to Oracle E-Business Suite Release 12 Critical Security Patch Update Knowledge Document (May 2026), My Oracle Support Note KA923.

 

Oracle Hospitality Applications Risk Matrix

This Critical Security Patch Update contains 1 new security patch for Oracle Hospitality Applications.  This vulnerability is remotely exploitable without authentication, i.e., may be exploited over a network without requiring user credentials.  The English text form of this Risk Matrix can be found here.