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VulnerabilityPublished

CVE-2026-22018: Oracle Java SE · Unthrottled Resource Allocation

Affects Oracle Java SESource CVE Database V5

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Not known to be exploited · CVSS 3.7 Low.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
3.7Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 19% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Oracle CorporationOracle Java SEAffected
  • 8u481 – 26
8 affected builds
Fixed in–
Oracle CorporationOracle GraalVM for JDKAffected
  • =17.0.18
  • =21.0.10
Fixed in–
Oracle CorporationOracle GraalVM Enterprise EditionAffected
  • =21.3.17
Fixed in–
Mavencom.oracle/java-sepkg:maven/com.oracle/java-seOther threatsAffected
  • 11.0.30 – 26
5 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Oracle’s April 2026 Critical Patch Update advisory strongly recommends applying the latest cumulative security patches promptly. Although the advisory does not explicitly confirm a patch for CVE-2026-22018, applying the April 2026 CPU is advised to address this and other vulnerabilities. Customers should remain on actively supported versions and apply Critical Patch Updates without delay. Patch status for this specific vulnerability is not explicitly confirmed; therefore, check the vendor advisory for the latest remediation guidance.

Description

CVE-2026-22018 is a low-severity vulnerability affecting multiple versions of Oracle Java SE, Oracle GraalVM for JDK, and Oracle GraalVM Enterprise Edition. It allows an unauthenticated attacker with network access via multiple protocols to cause a partial denial of service (partial DOS) by exploiting APIs in the affected component. The vulnerability is difficult to exploit and does not impact confidentiality or integrity. It applies to Java deployments that run untrusted code relying on the Java sandbox. No known exploits are reported in the wild. Oracle has not explicitly stated patch availability for this specific vulnerability in the advisory but recommends applying the April 2026 Critical Patch Update, which includes numerous security patches. The CVSS 3.1 base score is 3.7, indicating a low impact primarily on availability.

References

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