RHSA-2026:42878
Vulnerability from csaf_redhat - Published: 2026-07-23 11:32 - Updated: 2026-08-10 20:33Summary
Red Hat Security Advisory: OpenJDK 8u502 Security Update for Portable Linux Builds
Severity
Important
Notes
Topic: An update is now available for OpenJDK.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The OpenJDK 8 packages provide the OpenJDK 8 Java Runtime Environment and the OpenJDK 8 Java Software Development Kit.
This release of the Red Hat build of OpenJDK 8 (8u502) for portable Linux serves as a replacement for Red Hat build of OpenJDK 8 (8u492) and includes security and bug fixes as well as enhancements. For further information, refer to the release notes linked to in the References section.
Security Fix(es):
* JDK: Enhance TLS certificate handling (CVE-2026-46968)
* JDK: Enhance JPEG handling (CVE-2026-47010)
* JDK: Enhance XBM image support (CVE-2026-47021)
* JDK: Enhance Jar file processing (CVE-2026-47027)
* JDK: Improve certification checking (CVE-2026-60147)
* JDK: Enhance AWT ImagingLib (CVE-2026-47059)
* JDK: Enhance Jar handling (CVE-2026-47063)
* JDK: Improve Nashorn index handling (CVE-2026-47057)
* JDK: Enhance Dataview Implementation (CVE-2026-47058)
* JDK: Update LCMS to 2.19 (CVE-2026-41254)
Enhancement(s):
* For the last couple of years, OpenJDK has used a single build shared among multiple RPMs and a tarball available on the customer portal. The single "portable" build has a release number ('p') and each RPM has its own release number ('r'). However, the RPM naming only showed the RPM release number, while the version output from the build showed the portable release number, making it unclear that they were different numbers. From this release onwards, a release field of the form 'p.r' is always used for RPMs and the version output shows 'p'. (OPENJDK-4906)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in Little CMS. An integer overflow in the `CubeSize` function within `cmslut.c` occurs because the overflow check is performed after the multiplication. An attacker could exploit this vulnerability by providing a specially crafted input, potentially leading to information disclosure or a denial of service (DoS), which makes the system unavailable to legitimate users.
6.1 (Medium)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Red Hat Build of OpenJDK 8u502
Red Hat / OpenJDK
|
cpe:/a:redhat:openjdk:1.8
|
— |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in OpenJDK. When a server has wantClientAuth and the client sends a no_certificate alert, any client certificates are not verified.
5.9 (Medium)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Red Hat Build of OpenJDK 8u502
Red Hat / OpenJDK
|
cpe:/a:redhat:openjdk:1.8
|
— |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in OpenJDK. The regex defined in XbmImageDecoder (matchRegex) is vulnerable to a DoS attack when the input contains a long string without a closing character; due to excessive backtracking.
5.3 (Medium)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Red Hat Build of OpenJDK 8u502
Red Hat / OpenJDK
|
cpe:/a:redhat:openjdk:1.8
|
— |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in OpenJDK. The processImpl() method in SignatureFileVerifier exhibits O(n^2) time complexity when verifying JAR files where different entries have different signer combinations, potentially leading to DoS.
5.3 (Medium)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Red Hat Build of OpenJDK 8u502
Red Hat / OpenJDK
|
cpe:/a:redhat:openjdk:1.8
|
— |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in OpenJDK. There is an integer overflow in TypedArray.prototype.set() which can cause a DoS.
7.5 (High)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Red Hat Build of OpenJDK 8u502
Red Hat / OpenJDK
|
cpe:/a:redhat:openjdk:1.8
|
— |
Vendor Fix
fix
|
Threats
Impact
Important
A flaw was found in OpenJDK. 1) DataView getter/setter methods use absolute ByteBuffer indexing and ignore the offset, allowing read and write to memory outside its intended window. 2) Missing bounds check in the DataView constructor fails to validate the capacity.
7.4 (High)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Red Hat Build of OpenJDK 8u502
Red Hat / OpenJDK
|
cpe:/a:redhat:openjdk:1.8
|
— |
Vendor Fix
fix
|
Threats
Impact
Important
A flaw was found in OpenJDK. When the software processes certain images, a specific function fails to manage memory boundaries correctly. This can lead to the application attempting to access invalid memory or dereference a null pointer, which may cause the application to unexpectedly terminate. The primary consequence of this vulnerability is a denial of service, making the affected application unavailable.
CWE-476 - NULL Pointer DereferenceAffected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Red Hat Build of OpenJDK 8u502
Red Hat / OpenJDK
|
cpe:/a:redhat:openjdk:1.8
|
— |
Vendor Fix
fix
Workaround
|
Threats
Impact
Low
A flaw was found in OpenJDK. There exists a potential existential forgery vulnerability in CMS and protocols which use CMS. In Java, CMS is used to sign JAR files.
7.5 (High)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Red Hat Build of OpenJDK 8u502
Red Hat / OpenJDK
|
cpe:/a:redhat:openjdk:1.8
|
— |
Vendor Fix
fix
|
Threats
Impact
Important
A flaw was found in OpenJDK. OpenJDK can apply two different security meanings to the same wildcard dNSName SAN across certificate policy enforcement and hostname verification. During path validation, DNSName.constrains compares *.foo.com and secret.foo.com literally and returns NAME_SAME_TYPE, so NameConstraintsExtension.verify does not reject the chain when secret.foo.com is an exact-host exclusion. Later, HostnameChecker interprets the same SAN as a wildcard template and accepts secret.foo.com for *.foo.com.
6.5 (Medium)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
|
Red Hat Build of OpenJDK 8u502
Red Hat / OpenJDK
|
cpe:/a:redhat:openjdk:1.8
|
— |
Vendor Fix
fix
|
Threats
Impact
Moderate
References
59 references
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"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
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{
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"details": "Low"
}
],
"title": "openjdk: Enhance JPEG handling (Oracle CPU 2026-07)"
},
{
"cve": "CVE-2026-47021",
"cwe": {
"id": "CWE-1333",
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"ids": [
{
"system_name": "Red Hat Bugzilla ID",
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"notes": [
{
"category": "description",
"text": "A flaw was found in OpenJDK. The regex defined in XbmImageDecoder (matchRegex) is vulnerable to a DoS attack when the input contains a long string without a closing character; due to excessive backtracking.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "openjdk: Enhance XBM image support (Oracle CPU 2026-07)",
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},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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],
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{
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"integrityImpact": "NONE",
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"scope": "UNCHANGED",
"userInteraction": "NONE",
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"details": "Moderate"
}
],
"title": "openjdk: Enhance XBM image support (Oracle CPU 2026-07)"
},
{
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"system_name": "Red Hat Bugzilla ID",
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{
"category": "summary",
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},
{
"category": "general",
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"title": "CVSS score applicability"
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],
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"scope": "UNCHANGED",
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}
],
"title": "openjdk: Enhance Jar file processing (Oracle CPU 2026-07)"
},
{
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{
"category": "general",
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"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
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"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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],
"title": "openjdk: Improve Nashorn index handling (Oracle CPU 2026-07)"
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{
"cve": "CVE-2026-47058",
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"id": "CWE-787",
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{
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},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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],
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},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-47058",
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"scope": "UNCHANGED",
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"title": "openjdk: Enhance Dataview Implementation (Oracle CPU 2026-07)"
},
{
"cve": "CVE-2026-47059",
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"id": "CWE-476",
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"ids": [
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{
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},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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],
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},
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"category": "external",
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},
{
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"product_ids": [
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"baseScore": 3.7,
"baseSeverity": "LOW",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
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"title": "openjdk: Enhance AWT ImagingLib (Oracle CPU 2026-07)"
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{
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},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
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"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
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"title": "openjdk: Enhance Jar handling (Oracle CPU 2026-07)"
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{
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"ids": [
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"system_name": "Red Hat Bugzilla ID",
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"title": "Vulnerability description"
},
{
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},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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},
{
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"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
},
"products": [
"Red Hat Build of OpenJDK 8u502"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "openjdk: Improve certification checking (Oracle CPU 2026-07)"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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