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CVE-2026-65654: temporalio/ringpop-go fails to enforce configured label limits on inbound membership gossip

High · CVSS 8.7 (CVSS 4.0)EPSS 0.58%, 47th percentilePublished Updated Assigner: Temporal

Description

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.

CWE-770

Tracked companies

Temporal Cloud

Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.

Status incidents that name it

No tracked status incident names this CVE.

Affected vendors and products

Temporal Technologies, Inc.: temporalio/ringpop-go

References

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