Deserialization of untrusted data in Oracle Java SE
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Partial Red Hat: 22 fixed, 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-502.
Summary
Vulnerability in Oracle Java SE (component: Scripting). Supported versions that are affected are Oracle Java SE: 8u491, 8u491-perf and 11.0.31. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Java SE accessible data as well as unauthorized access to critical data or complete access to all Oracle Java SE accessible data. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 7.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Oracle | Oracle Java SE | 8u491; 8u491-perf; 11.0.31 | — | No fix listed | CNA |
- Oracle Java SE VendorOracle Affected 8u491; 8u491-perf; 11.0.31 Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:oracle:jre:1.8.0:update491:*:*:-:*:*:* | 1.8.0 update491 | Vulnerable | Oracle |
| cpe:2.3:a:oracle:jre:1.8.0:update491:*:*:enterprise_performance_pack:*:*:* | 1.8.0 update491 | Vulnerable | Oracle |
| cpe:2.3:a:oracle:jre:11.0.31:*:*:*:*:*:*:* | 11.0.31 | Vulnerable | Oracle |
| cpe:2.3:a:oracle:jdk:1.8.0:update491:*:*:-:*:*:* | 1.8.0 update491 | Vulnerable | Oracle |
| cpe:2.3:a:oracle:jdk:1.8.0:update491:*:*:enterprise_performance_pack:*:*:* | 1.8.0 update491 | Vulnerable | Oracle |
| cpe:2.3:a:oracle:jdk:11.0.31:*:*:*:*:*:*:* | 11.0.31 | Vulnerable | Oracle |
- cpe:2.3:a:oracle:jre:1.8.0:update491:*:*:-:*:*:* Versions 1.8.0 update491 Vulnerable ·Oracle
- cpe:2.3:a:oracle:jre:1.8.0:update491:*:*:enterprise_performance_pack:*:*:* Versions 1.8.0 update491 Vulnerable ·Oracle
- cpe:2.3:a:oracle:jre:11.0.31:*:*:*:*:*:*:* Versions 11.0.31 Vulnerable ·Oracle
- cpe:2.3:a:oracle:jdk:1.8.0:update491:*:*:-:*:*:* Versions 1.8.0 update491 Vulnerable ·Oracle
- cpe:2.3:a:oracle:jdk:1.8.0:update491:*:*:enterprise_performance_pack:*:*:* Versions 1.8.0 update491 Vulnerable ·Oracle
- cpe:2.3:a:oracle:jdk:11.0.31:*:*:*:*:*:*:* Versions 11.0.31 Vulnerable ·Oracle
Remediation
Red Hat 8 advisories
- RHSA-2026:52949 Released 2026-08-10 · Red Hat rating Importantjava-1.8.0-ibm security update
- Red Hat Enterprise Linux Supplementary (v. 8) java-1.8.0-ibm-1:1.8.0.8.70-1.el8_10, java-1.8.0-ibm-demo-1:1.8.0.8.70-1.el8_10, java-1.8.0-ibm-devel-1:1.8.0.8.70-1.el8_10 +5
- RHSA-2026:42877 Released 2026-07-23 · Red Hat rating Importantjava-1.8.0-openjdk security update
- Red Hat CodeReady Linux Builder EUS (v.9.6) java-1.8.0-openjdk-demo-fastdebug-1:1.8.0.502.b07-1.1.el9, java-1.8.0-openjdk-demo-slowdebug-1:1.8.0.502.b07-1.1.el9, java-1.8.0-openjdk-devel-fastdebug-1:1.8.0.502.b07-1.1.el9 +7
- Red Hat Enterprise Linux AppStream (v. 8) java-1.8.0-openjdk-1:1.8.0.502.b07-1.1.el8, java-1.8.0-openjdk-accessibility-1:1.8.0.502.b07-1.1.el8, java-1.8.0-openjdk-demo-1:1.8.0.502.b07-1.1.el8 +5
- Red Hat Enterprise Linux AppStream (v. 9) java-1.8.0-openjdk-1:1.8.0.502.b07-1.2.el9, java-1.8.0-openjdk-demo-1:1.8.0.502.b07-1.2.el9, java-1.8.0-openjdk-devel-1:1.8.0.502.b07-1.2.el9 +4
- Red Hat Enterprise Linux AppStream AUS (v.8.4) java-1.8.0-openjdk-1:1.8.0.502.b07-1.1.el8, java-1.8.0-openjdk-accessibility-1:1.8.0.502.b07-1.1.el8, java-1.8.0-openjdk-demo-1:1.8.0.502.b07-1.1.el8 +5
- Red Hat Enterprise Linux AppStream AUS (v.8.6) java-1.8.0-openjdk-1:1.8.0.502.b07-1.1.el8, java-1.8.0-openjdk-accessibility-1:1.8.0.502.b07-1.1.el8, java-1.8.0-openjdk-demo-1:1.8.0.502.b07-1.1.el8 +5
- Red Hat Enterprise Linux AppStream E4S (v.8.8) java-1.8.0-openjdk-1:1.8.0.502.b07-1.1.el8, java-1.8.0-openjdk-accessibility-1:1.8.0.502.b07-1.1.el8, java-1.8.0-openjdk-demo-1:1.8.0.502.b07-1.1.el8 +5
- Red Hat Enterprise Linux AppStream E4S (v.9.2) java-1.8.0-openjdk-1:1.8.0.502.b07-1.1.el9, java-1.8.0-openjdk-demo-1:1.8.0.502.b07-1.1.el9, java-1.8.0-openjdk-devel-1:1.8.0.502.b07-1.1.el9 +4
- Red Hat Enterprise Linux AppStream E4S (v.9.4) java-1.8.0-openjdk-1:1.8.0.502.b07-1.1.el9, java-1.8.0-openjdk-demo-1:1.8.0.502.b07-1.1.el9, java-1.8.0-openjdk-devel-1:1.8.0.502.b07-1.1.el9 +4
- Red Hat Enterprise Linux AppStream EUS (v.9.6) java-1.8.0-openjdk-1:1.8.0.502.b07-1.1.el9, java-1.8.0-openjdk-demo-1:1.8.0.502.b07-1.1.el9, java-1.8.0-openjdk-devel-1:1.8.0.502.b07-1.1.el9 +4
- Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) java-1.8.0-openjdk-1:1.8.0.502.b07-1.1.el8, java-1.8.0-openjdk-accessibility-1:1.8.0.502.b07-1.1.el8, java-1.8.0-openjdk-demo-1:1.8.0.502.b07-1.1.el8 +5
- Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) java-1.8.0-openjdk-1:1.8.0.502.b07-1.1.el8, java-1.8.0-openjdk-accessibility-1:1.8.0.502.b07-1.1.el8, java-1.8.0-openjdk-demo-1:1.8.0.502.b07-1.1.el8 +5
- Red Hat Enterprise Linux AppStream TUS (v.8.8) java-1.8.0-openjdk-1:1.8.0.502.b07-1.1.el8, java-1.8.0-openjdk-accessibility-1:1.8.0.502.b07-1.1.el8, java-1.8.0-openjdk-demo-1:1.8.0.502.b07-1.1.el8 +5
- Red Hat Enterprise Linux CRB (v. 8) java-1.8.0-openjdk-accessibility-fastdebug-1:1.8.0.502.b07-1.1.el8, java-1.8.0-openjdk-accessibility-slowdebug-1:1.8.0.502.b07-1.1.el8, java-1.8.0-openjdk-demo-fastdebug-1:1.8.0.502.b07-1.1.el8 +9
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) java-1.8.0-openjdk-demo-fastdebug-1:1.8.0.502.b07-1.2.el9, java-1.8.0-openjdk-demo-slowdebug-1:1.8.0.502.b07-1.2.el9, java-1.8.0-openjdk-devel-fastdebug-1:1.8.0.502.b07-1.2.el9 +7
- RHSA-2026:42876 Released 2026-07-23 · Red Hat rating Importantjava-1.8.0-openjdk security update
- Red Hat Enterprise Linux Server (v. 7 ELS) java-1.8.0-openjdk-1:1.8.0.502.b07-1.1.el7_9, java-1.8.0-openjdk-devel-1:1.8.0.502.b07-1.1.el7_9, java-1.8.0-openjdk-headless-1:1.8.0.502.b07-1.1.el7_9
- Red Hat Enterprise Linux Server Optional (v. 7 ELS) java-1.8.0-openjdk-accessibility-1:1.8.0.502.b07-1.1.el7_9, java-1.8.0-openjdk-demo-1:1.8.0.502.b07-1.1.el7_9, java-1.8.0-openjdk-javadoc-1:1.8.0.502.b07-1.1.el7_9 +2
Show 5 more Red Hat advisories
- RHSA-2026:42878 Released 2026-07-23 · Red Hat rating ImportantOpenJDK 8u502 Security Update for Portable Linux Builds
- Red Hat Build of OpenJDK 8u502
- RHSA-2026:42879 Released 2026-07-23 · Red Hat rating ImportantOpenJDK 8u502 Windows Security Update
- Red Hat Build of OpenJDK 8u502
- RHSA-2026:42882 Released 2026-07-23 · Red Hat rating ImportantOpenJDK 11.0.32 ELS Security Update for Windows Builds
- OPENJDK ELS 11.0.32
- RHSA-2026:42881 Released 2026-07-23 · Red Hat rating ImportantOpenJDK 11.0.32 ELS Security Update for Portable Linux Builds
- OPENJDK ELS 11.0.32
- RHSA-2026:42880 Released 2026-07-23 · Red Hat rating ImportantJava 11 OpenJDK ELS Security Update
- Red Hat OpenJDK 11 ELS for RHEL 7 java-11-openjdk-1:11.0.32.0.9-1.el7_9, java-11-openjdk-debug-1:11.0.32.0.9-1.el7_9, java-11-openjdk-demo-1:11.0.32.0.9-1.el7_9 +15
- Red Hat OpenJDK 11 ELS for RHEL 8 java-11-openjdk-1:11.0.32.0.9-1.el8, java-11-openjdk-demo-1:11.0.32.0.9-1.el8, java-11-openjdk-demo-fastdebug-1:11.0.32.0.9-1.el8 +20
- Red Hat OpenJDK 11 ELS for RHEL 9 java-11-openjdk-1:11.0.32.0.9-1.el9, java-11-openjdk-demo-1:11.0.32.0.9-1.el9, java-11-openjdk-demo-fastdebug-1:11.0.32.0.9-1.el9 +20
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Oracle Java SE — oracle.com/security-alerts/cpujul2026.html
17 records Highest priority Priority LOW 17 LOW
Other records, highest priority first
- TI-2026-34659 Uncontrolled resource consumption in Oracle Java SEPriority LOW 39
- TI-2026-34665 Improper access control in Oracle Java SEPriority LOW 38
- TI-2026-42850 Improper access control in Oracle Java SEPriority LOW 35
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| OPENJDK ELS 11.0.32 | Fixed | RHSA-2026:42881 |
| Red Hat Build of OpenJDK 8u502 | Fixed | RHSA-2026:42879 |
| Red Hat CodeReady Linux Builder EUS (v.9.6) | Fixed | RHSA-2026:42877 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2026:42877 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:42877 |
| Red Hat Enterprise Linux AppStream AUS (v.8.4) | Fixed | RHSA-2026:42877 |
| Red Hat Enterprise Linux AppStream AUS (v.8.6) | Fixed | RHSA-2026:42877 |
| Red Hat Enterprise Linux AppStream E4S (v.8.8) | Fixed | RHSA-2026:42877 |
| Red Hat Enterprise Linux AppStream E4S (v.9.2) | Fixed | RHSA-2026:42877 |
| Red Hat Enterprise Linux AppStream E4S (v.9.4) | Fixed | RHSA-2026:42877 |
| Red Hat Enterprise Linux AppStream EUS (v.9.6) | Fixed | RHSA-2026:42877 |
| Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) | Fixed | RHSA-2026:42877 |
| Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) | Fixed | RHSA-2026:42877 |
| Red Hat Enterprise Linux AppStream TUS (v.8.8) | Fixed | RHSA-2026:42877 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2026:42877 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | Fixed | RHSA-2026:42877 |
| Red Hat Enterprise Linux Server (v. 7 ELS) | Fixed | RHSA-2026:42876 |
| Red Hat Enterprise Linux Server Optional (v. 7 ELS) | Fixed | RHSA-2026:42876 |
| Red Hat Enterprise Linux Supplementary (v. 8) | Fixed | RHSA-2026:52949 |
| Red Hat OpenJDK 11 ELS for RHEL 7 | Fixed | RHSA-2026:42880 |
| Red Hat OpenJDK 11 ELS for RHEL 8 | Fixed | RHSA-2026:42880 |
| Red Hat OpenJDK 11 ELS for RHEL 9 | Fixed | RHSA-2026:42880 |
Not affected: 18 products
- Cryostat 4
- Red Hat AMQ Broker 7
- Red Hat AMQ Clients
- Red Hat Build of Keycloak
- Red Hat Data Grid 8
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Hardened Images
- Red Hat JBoss Enterprise Application Platform 7
- Red Hat JBoss Enterprise Application Platform 8
- Red Hat Single Sign-On 7
- Red Hat build of Apache Camel 4 for Quarkus 3
- Red Hat build of OpenJDK 17
- Red Hat build of OpenJDK 21
- Red Hat build of OpenJDK 25
- streams for Apache Kafka 2
- streams for Apache Kafka 3
Timeline
- 2026-10-02 Threatist record created from CVE-2026-47058
- 2026-10-03 Alias added: GHSA-j75p-jh2f-6h9p
- 2026-10-09 Fix available: RHSA-2026:42879 · Red Hat
- 2026-10-09 Fix available: RHSA-2026:42878 · Red Hat
- 2026-10-09 Fix available: Red Hat Build of OpenJDK 8u502 · Red Hat
References
Advisory 1
More Oracle Jdk vulnerabilities
- TI-2016-02888 Unspecified vulnerability in Oracle Java SE 6u113, 7u99, and 8u77; Java SE Embedded 8u77… KEVCVSS 3.1CRITICAL 9.8
- TI-2015-02278 Unspecified vulnerability in Oracle Java SE 6u95, 7u80, and 8u45, and Java SE Embedded… KEVCVSS 3.1CRITICAL 9.8
- TI-2013-00349 Multiple vulnerabilities in Oracle Java 7 before Update 11 allow remote attackers to… KEVCVSS 3.1CRITICAL 9.8
- TI-2012-03989 Multiple vulnerabilities in the Java Runtime Environment (JRE) component in Oracle Java… KEVCVSS 3.1CRITICAL 9.8
- TI-2012-01511 Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java… KEVCVSS 3.1CRITICAL 9.8
- TI-2011-03122 Unspecified vulnerability in the Java Runtime Environment component in Oracle Java SE JDK… KEVCVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-47058 · CVE Program
- CVE-2026-47058 · NVD
- FIRST EPSS
- GHSA-j75p-jh2f-6h9p · GitHub Advisory Database · CC BY 4.0
- CVE-2026-47058 · Red Hat security data · CC BY 4.0
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