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TI-2026-78628 Aliases CVE-2026-111074GHSA-rr74-gf97-xpw7

Integer overflow in Eclipse OpenJ9 JITServer enables remote DoS

Priority MEDIUM 44CWE-190Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.

Summary

Eclipse OpenJ9 from 0.8.0 before 0.63 is affected. An integer overflow in MessageBuffer::computeRequiredCapacity() (CWE-190) occurs when the JITServer component reads the initial 4-byte length field of an incoming TCP connection, and it makes the compilation worker thread loop forever at nearly full CPU. An unauthenticated remote attacker can open a small number of crafted TCP connections to exhaust the worker thread pool, which silently halts compilation for all connected client JVMs.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

In Eclipse OpenJ9 versions prior to 0.63.0, the JITServer component is vulnerable to a pre-authentication remote denial of service. When processing the initial 4-byte length field of an incoming TCP connection, an integer overflow in `MessageBuffer::computeRequiredCapacity()` causes the receiving compilation worker thread to enter an infinite loop consuming ~100% CPU. An unauthenticated remote attacker can exploit this by opening a small number of crafted TCP connections to exhaust the entire worker thread pool, silently halting compilation services for all connected client JVMs.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00421 36th percentileScored 2026-11-07
Fix Fixed Eclipse OpenJ9 (Eclipse Foundation): 0.63

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Eclipse FoundationEclipse OpenJ90.8.0 to before 0.630.63Patch availableCNA
  • Eclipse OpenJ9 VendorEclipse Foundation Affected 0.8.0 to before 0.63 Fixed in 0.63 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:eclipse:openj9:*:*:*:*:*:*:*:*——Eclipse Foundation

Remediation

Upgrade Eclipse OpenJ9 to version 0.63 or later, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA Eclipse OpenJ9 (Eclipse Foundation) Fixed in 0.63

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Eclipse OpenJ9 0.63

    3 records Highest priority Priority MEDIUM 3 MEDIUM

    Other records, highest priority first

    • TI-2026-78629 Integer underflow in Eclipse OpenJ9 JITServer crashes processPriority MEDIUM 44
    • TI-2026-78626 Out-of-bounds heap reads in Eclipse OpenJ9 JITServer enable denial of servicePriority MEDIUM 44
    Show all 3 records →

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-111074
  2. 2026-10-21 Alias added: GHSA-rr74-gf97-xpw7
  3. 2026-10-22 Priority changed: MEDIUM → LOW
  4. 2026-10-26 CISA SSVC decision points changed
  5. 2026-10-26 Priority changed: LOW → MEDIUM

References

Other 3

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2026-81947 Unauthenticated command injection in Eclipse Che che-machine-exec CVSS 3.1CRITICAL 9.8
  • TI-2026-13216 CWE-863: ABAC authorization bypass via trailing slash route normalization in Eclipse BaSyx Go Components CVSS 3.1CRITICAL 9.8
  • TI-2026-06514 Path traversal in Eclipse BaSyx CVSS 3.1CRITICAL 10.0
  • TI-2026-01382 In the Eclipse Theia Website repository, the GitHub Actions workflow… CVSS 3.1CRITICAL 10.0
  • TI-2026-74697 Authentication bypass in Eclipse Jetty EthereumAuthenticator CVSS 4.0CRITICAL 9.3
See all 466 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences