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4 vulnerabilities found for temporalio/tchannel-go by Temporal Technologies, Inc.
CVE-2026-65653 (GCVE-0-2026-65653)
Vulnerability from nvd – Published: 2026-09-21 11:36 – Updated: 2026-09-21 15:28
VLAI
EPSS
VEX
Title
temporalio/tchannel-go zero-chunk call fragment causes process termination
Summary
github.com/temporalio/tchannel-go did not reject TChannel call fragments containing checksum metadata but no length-prefixed argument chunks. The fragment reader left its chunk slice empty and then unconditionally selected the first element. A network peer can supply such a malformed call fragment, including as a direct initial call request after completing the standard initialization handshake. On that inbound path, the resulting unrecovered Go slice-bounds panic occurs on a library-created dispatch goroutine and terminates 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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 15:28 UTC
CWE
- CWE-129 - Improper Validation of Array Index
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Temporal Technologies, Inc. | temporalio/tchannel-go |
Affected:
0.0.0-20150531204735-8d8ca17342b3 , < 1.22.1-0.20260720194454-0cb017f6870a
(semver)
|
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CVE-2026-65652 (GCVE-0-2026-65652)
Vulnerability from nvd – Published: 2026-09-21 11:35 – Updated: 2026-09-21 15:30
VLAI
EPSS
VEX
Title
temporalio/tchannel-go malformed checksum type causes process termination
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 15:29 UTC
CWE
- CWE-129 - Improper Validation of Array Index
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Temporal Technologies, Inc. | temporalio/tchannel-go |
Affected:
0.0.0-20160105034737-a6904155f628 , < 1.22.1-0.20260720194454-0cb017f6870a
(semver)
|
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CVE-2026-65653 (GCVE-0-2026-65653)
Vulnerability from cvelistv5 – Published: 2026-09-21 11:36 – Updated: 2026-09-21 15:28
VLAI
EPSS
VEX
Title
temporalio/tchannel-go zero-chunk call fragment causes process termination
Summary
github.com/temporalio/tchannel-go did not reject TChannel call fragments containing checksum metadata but no length-prefixed argument chunks. The fragment reader left its chunk slice empty and then unconditionally selected the first element. A network peer can supply such a malformed call fragment, including as a direct initial call request after completing the standard initialization handshake. On that inbound path, the resulting unrecovered Go slice-bounds panic occurs on a library-created dispatch goroutine and terminates 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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 15:28 UTC
CWE
- CWE-129 - Improper Validation of Array Index
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Temporal Technologies, Inc. | temporalio/tchannel-go |
Affected:
0.0.0-20150531204735-8d8ca17342b3 , < 1.22.1-0.20260720194454-0cb017f6870a
(semver)
|
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CVE-2026-65652 (GCVE-0-2026-65652)
Vulnerability from cvelistv5 – Published: 2026-09-21 11:35 – Updated: 2026-09-21 15:30
VLAI
EPSS
VEX
Title
temporalio/tchannel-go malformed checksum type causes process termination
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 15:29 UTC
CWE
- CWE-129 - Improper Validation of Array Index
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Temporal Technologies, Inc. | temporalio/tchannel-go |
Affected:
0.0.0-20160105034737-a6904155f628 , < 1.22.1-0.20260720194454-0cb017f6870a
(semver)
|
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