CVE-2022-21476Network attack vector

Data disclosure via defective XML signature validation

Published Apr 19, 2022 · Updated May 27, 2026

Improper access control in Oracle Java SE Libraries allows remote attackers to read protected data through vulnerable APIs. OpenJDK distribution advisories identify defective secure validation in bundled Apache Santuario XML-signature processing, but Oracle has not disclosed the failed check or code path. Exploitation requires untrusted sandboxed code or attacker-controlled data reaching the affected APIs and exposes data accessible to the Java deployment.

CVSS severity7.5
High
EPSS probability4.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Oracle Java SE Libraries allows remote attackers to read protected data through vulnerable APIs. OpenJDK distribution advisories identify defective secure validation in bundled Apache Santuario XML-signature processing, but Oracle has not disclosed the failed check or code path. Exploitation requires untrusted sandboxed code or attacker-controlled data reaching the affected APIs and exposes data accessible to the Java deployment.

The record

CVE
CVE-2022-21476
Published
Apr 19, 2022
Updated
May 27, 2026
Vendor
Oracle Corporation
Product
Java Platform, Standard Edition (Java SE)
Classifications
CWE-284
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 19, 2022CVE publishedPublication date reported by the CVE source.
  2. May 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Oracle GraalVM Enterprise Edition:20.3.5
  2. Affected versionversion=Oracle GraalVM Enterprise Edition:21.3.1
  3. Affected versionversion=Oracle GraalVM Enterprise Edition:22.0.0.2
  4. Affected versionversion=Oracle Java SE:11.0.14
  5. Affected versionversion=Oracle Java SE:17.0.2
  6. Affected versionversion=Oracle Java SE:18
  7. Affected versionversion=Oracle Java SE:7u331
  8. Affected versionversion=Oracle Java SE:8u321

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Java Platform, Standard Edition (Java SE)version=Oracle GraalVM Enterprise Edition:20.3.5; version=Oracle GraalVM Enterprise Edition:21.3.1; version=Oracle GraalVM Enterprise Edition:22.0.0.2; version=Oracle Java SE:11.0.14; version=Oracle Java SE:17.0.2; version=Oracle Java SE:18; version=Oracle Java SE:7u331; version=Oracle Java SE:8u321

Published CVSS scores

7.5Oracle CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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