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RewindexCVEsTemporal Cloud

CVE-2026-65652: temporalio/tchannel-go malformed checksum type causes process termination

High · CVSS 8.7 (CVSS 4.0)EPSS 0.71%, 53th percentilePublished Updated Assigner: Temporal

Description

github.com/temporalio/tchannel-go did not validate the one-byte checksum-type field in inbound TChannel call frames. A network peer that can reach a listener can complete the standard initialization handshake and send a call request with an unsupported checksum type. The parser uses that value as an index into a four-entry checksum pool, causing an unrecovered Go panic on the connection read goroutine and terminating the hosting process. This allows remote denial of service against applications that expose the listener to untrusted peers. The impact is limited to availability; no confidentiality or integrity impact was identified.

CWE-129

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/tchannel-go

References

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