PT-2026-96072 · Temporal · Temporal Server+1

CVE-2026-16651

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Published

2026-09-21

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Updated

2026-09-21

CVSS v4.0

8.7

High

VectorAV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Name of the Vulnerable Software and Affected Versions temporalio/sqlparser (affected versions not specified) Temporal Server (affected versions not specified)
Description A panic occurs when the Parse, ParseStrictDDL, or ParseNext functions process a MySQL version comment that is empty or contains only one to five decimal digits. This happens because the ExtractMysqlComment() function fails to validate the -1 result from strings.IndexFunc before using it as a slice boundary, leading to a Go runtime panic. In Temporal Server, this is exposed via the ListWorkers API endpoint. An authenticated user with namespace read permissions can send a malformed query to terminate the Matching process, potentially leading to a sustained denial of service. This issue impacts availability without affecting confidentiality or integrity.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Improper Validation of Array Index

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Weakness Enumeration

Related Identifiers

CVE-2026-16651

Affected Products

Temporal Server
Sqlparse