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TI-2026-46801 Aliases CVE-2026-65654GHSA-2cw5-f255-55f8

temporalio/ringpop-go fails to enforce configured label limits on inbound membership gossip

Priority MEDIUM 44CWE-770Published · 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
Partial Red Hat: 1 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-770.

Summary

github.com/temporalio/ringpop-go enforces configured LabelOptions limits when an application changes the local node's labels, but affected versions do not apply those limits to label maps received in SWIM membership changes. A network peer that can reach a live Ringpop TChannel listener can repeatedly submit changes for distinct member addresses containing label keys, values, or counts that exceed the receiver's configured limits. Accepted labels are retained in the member list and disseminated to peers, allowing memory and gossip-bandwidth consumption to exceed configured bounds and potentially making the hosting process unavailable. The fix validates peer-supplied label maps before they are retained or disseminated. Availability only; no confidentiality or integrity impact was identified.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00577 47th percentileScored 2026-11-07
Fix Partial temporalio/ringpop-go (Temporal Technologies, Inc.): 0.0.0-20260724173031-c317effcdc8bRed Hat: 1 without a fix

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
Temporal Technologies, Inc.temporalio/ringpop-go0.0.0-20160824133849-d0de5fe13330 to before 0.0.0-20260724173031-c317effcdc8b0.0.0-20260724173031-c317effcdc8bPatch availableCNA
  • temporalio/ringpop-go VendorTemporal Technologies, Inc. Affected 0.0.0-20160824133849-d0de5fe13330 to before 0.0.0-20260724173031-c317effcdc8b Fixed in 0.0.0-20260724173031-c317effcdc8b Patch available CNA

Remediation

  • Fix · CNA temporalio/ringpop-go (Temporal Technologies, Inc.) Fixed in 0.0.0-20260724173031-c317effcdc8b

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Ansible Automation Orchestrator 2026AffectedNo fix yet

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-65654
  2. 2026-10-03 Alias added: GHSA-2cw5-f255-55f8
  3. 2026-11-06 Affected versions changed · Red Hat
  4. 2026-11-06 CVSS score added · Red Hat

References

Patch 2

Other 4

  • TI-2026-63861 s2s-proxy accepts untrusted client certificates CVSS 4.0CRITICAL 9.3
  • TI-2026-46800 temporalio/tchannel-go zero-chunk call fragment causes process termination CVSS 4.0HIGH 8.7
  • TI-2026-46799 temporalio/tchannel-go malformed checksum type causes process termination CVSS 4.0HIGH 8.7
  • TI-2026-13897 temporalio/sqlparser malformed MySQL version comments can cause a panic CVSS 4.0HIGH 8.7
  • TI-2026-84119 Temporal Server k8s compute provider lets callers run host commands CVSS 4.0HIGH 8.7
  • TI-2026-60383 Temporal Server worker deployment compute provider executes a caller-supplied command on the Worker Service host CVSS 4.0HIGH 8.7
See all 17 →

Sources

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