CVE-2023-21939

21

FAUCET Score

CVE-2023-21939 is an easily exploitable integrity vulnerability in the Swing component of Oracle Java SE and Oracle GraalVM Enterprise Edition, affecting versions 8u361, 11.0.18, 17.0.6, 20, and various GraalVM editions. An unauthenticated attacker with network access via HTTP can compromise these products, leading to unauthorized data modification (insert, update, or delete). With a CVSS 3.1 Base Score of 5.3 (Medium), this vulnerability primarily impacts Java deployments running sandboxed applications that load untrusted code. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant media coverage, though it has received minimal community discussion.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		20.3.9CPE matchmatch criteria	cpe:2.3:a:oracle:graalvm:20.3.9::::enterprise:::
		21.3.5CPE matchmatch criteria	cpe:2.3:a:oracle:graalvm:21.3.5::::enterprise:::
		22.3.1CPE matchmatch criteria	cpe:2.3:a:oracle:graalvm:22.3.1::::enterprise:::
		1.8.0CPE matchmatch criteria	cpe:2.3:a:oracle:jdk:1.8.0:update361::::::
		11.0.18CPE matchmatch criteria	cpe:2.3:a:oracle:jdk:11.0.18:::::::*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

Exploitability Score

3.9

Impact Score

1.4

CvssVersion

3.1

Exploit Intelligence

EPSS Score

2.47%

Probability of exploitation in next 30 days

EPSS Percentile

82.9%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0247 is in the 74th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (37)

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9.0 Extended Update SupportFixed in: java-1.8.0-openjdk-1:1.8.0.372.b07-1.el9_0

redhatpatch availablevia redhat_api

Product: Red Hat Build of OpenJDK 11.0.19

redhatpatch availablevia redhat_api

Product: Red Hat Build of OpenJDK 17.0.7

redhatpatch availablevia redhat_api

Product: Red Hat Build of OpenJDK 8u362

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: java-11-openjdk-1:11.0.19.0.7-1.el7_9

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: java-1.8.0-openjdk-1:1.8.0.372.b07-1.el7_9

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7 SupplementaryFixed in: java-1.8.0-ibm-1:1.8.0.8.5-1jpp.1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8Fixed in: java-11-openjdk-1:11.0.19.0.7-1.el8_7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8Fixed in: java-17-openjdk-1:17.0.7.0.7-1.el8_7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8Fixed in: java-1.8.0-openjdk-1:1.8.0.372.b07-1.el8_7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8Fixed in: java-1.8.0-ibm-1:1.8.0.8.5-1.el8_8

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsFixed in: java-11-openjdk-1:11.0.19.0.7-1.el8_1

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsFixed in: java-1.8.0-openjdk-1:1.8.0.372.b07-1.el8_1

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.2 Advanced Update SupportFixed in: java-11-openjdk-1:11.0.19.0.7-1.el8_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.2 Advanced Update SupportFixed in: java-1.8.0-openjdk-1:1.8.0.372.b07-1.el8_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceFixed in: java-11-openjdk-1:11.0.19.0.7-1.el8_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceFixed in: java-1.8.0-openjdk-1:1.8.0.372.b07-1.el8_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsFixed in: java-11-openjdk-1:11.0.19.0.7-1.el8_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsFixed in: java-1.8.0-openjdk-1:1.8.0.372.b07-1.el8_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.4 Extended Update SupportFixed in: java-11-openjdk-1:11.0.19.0.7-1.el8_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.4 Extended Update SupportFixed in: java-17-openjdk-1:17.0.7.0.7-1.el8_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.4 Extended Update SupportFixed in: java-1.8.0-openjdk-1:1.8.0.372.b07-1.el8_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.6 Extended Update SupportFixed in: java-17-openjdk-1:17.0.7.0.7-1.el8_6

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.6 Extended Update SupportFixed in: java-11-openjdk-1:11.0.19.0.7-1.el8_6

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.6 Extended Update SupportFixed in: java-1.8.0-openjdk-1:1.8.0.372.b07-1.el8_6

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9Fixed in: java-17-openjdk-1:17.0.7.0.7-1.el9_1

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9Fixed in: java-11-openjdk-1:11.0.19.0.7-1.el9_1

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9Fixed in: java-1.8.0-openjdk-1:1.8.0.372.b07-1.el9_1

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9.0 Extended Update SupportFixed in: java-11-openjdk-1:11.0.19.0.7-1.el9_0

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9.0 Extended Update SupportFixed in: java-17-openjdk-1:17.0.7.0.7-1.el9_0

oraclevendor investigatingvia nvd_reference

redhatno patchvia redhat_api

Product: Red Hat build of OpenJDK 11Fixed in: Linux

redhatno patchvia redhat_api

Product: Red Hat build of OpenJDK 11Fixed in: Windows

redhatno patchvia redhat_api

Product: Red Hat build of OpenJDK 17Fixed in: Linux

redhatno patchvia redhat_api

Product: Red Hat build of OpenJDK 17Fixed in: Windows

redhatno patchvia redhat_api

Product: Red Hat build of OpenJDK 1.8Fixed in: Linux

redhatno patchvia redhat_api

Product: Red Hat build of OpenJDK 1.8Fixed in: Windows

Vendor Advisories (1)

redhatCVE-2023-21939Moderate

OpenJDK: Swing HTML parsing issue (8296832)

References

lists.debian.org / debian-lts-announce/2023/09/msg00018.html

Mailing ListThird Party Advisory

security.netapp.com / advisory/ntap-20230427-0008

Third Party Advisory

security.netapp.com / advisory/ntap-20240621-0006

couchbase.com / alerts

Third Party Advisory

debian.org / security/2023/dsa-5430

Third Party Advisory

debian.org / security/2023/dsa-5478

Third Party Advisory

oracle.com / security-alerts/cpuapr2023.html

Vendor Advisory