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CVE-2026-16651— temporalio/sqlparser malformed MySQL version comments can cause a panic

Quick assessment

Affected
Temporal Technologies, Inc. temporalio/sqlparser
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

temporalio/sqlparser can panic when Parse, ParseStrictDDL, or ParseNext processes a MySQL version comment whose contents are empty or consist only of one to five decimal digits. ExtractMysqlComment does not check the -1 result returned by strings.IndexFunc bef

CVSS 7.1 · High EPSS 0.39% · P33

Affected Version Matrix 4

VendorProduct Version RangeStatus
Temporal Technologies, Inc. Temporal Server 1.29.0≤ 1.29.7 affected
1.30.0< 1.30.7 affected
1.31.0< 1.31.3 affected
Temporal Technologies, Inc. temporalio/sqlparser 0.0.0-20180604150908-b055e9c9b4fa< 0.0.0-20260721183040-74181ffcbaaf affected
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I. Basic Information for CVE-2026-16651

Vulnerability Information

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Vulnerability Title
temporalio/sqlparser malformed MySQL version comments can cause a panic
Source: CVE Program / CVE List V5
Vulnerability Description
temporalio/sqlparser can panic when Parse, ParseStrictDDL, or ParseNext processes a MySQL version comment whose contents are empty or consist only of one to five decimal digits. ExtractMysqlComment does not check the -1 result returned by strings.IndexFunc before using it as a slice boundary. The resulting Go runtime panic propagates unless the caller recovers it on the parsing goroutine, so applications that parse attacker-controlled SQL can terminate. Temporal Server exposes the affected parser through ListWorkers. When that API is enabled, an authenticated caller with namespace read permission can submit a malformed query that terminates the receiving Matching process. Repeated requests can sustain a denial of service. The issue affects availability only; no confidentiality or integrity impact was identified.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对数组索引的验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Temporal Technologies, Inc. temporalio/sqlparser 0.0.0-20180604150908-b055e9c9b4fa ~ 0.0.0-20260721183040-74181ffcbaaf -
Temporal Technologies, Inc. Temporal Server 1.29.0 ~ 1.29.7 cpe:2.3:a:temporal:temporal:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-16651

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III. Intelligence Information for CVE-2026-16651

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Patches & Fixes for CVE-2026-16651 (4)

Other References for CVE-2026-16651 (3)

Same Patch Batch · Temporal Technologies, Inc. · 2026-09-21 · 8 CVEs total

CVE-2026-89139 8.7 HIGH Temporal Server worker deployment compute provider executes a caller-supplied command on t
CVE-2026-65653 8.7 HIGH temporalio/tchannel-go zero-chunk call fragment causes process termination
CVE-2026-65654 8.7 HIGH temporalio/ringpop-go fails to enforce configured label limits on inbound membership gossi
CVE-2026-65652 8.7 HIGH temporalio/tchannel-go malformed checksum type causes process termination
CVE-2026-87858 7.2 HIGH Temporal Server completion callback source header can direct attacker-chosen requests to t
CVE-2026-16652 7.1 HIGH Temporal Server Schedule exclusion search can cause excessive CPU consumption
CVE-2026-65651 6.0 MEDIUM temporalio/sqlparser deeply nested unary expressions can cause a fatal stack overflow duri

IV. Related Vulnerabilities

Same product: temporalio/sqlparser
Same vendor: Temporal Technologies, Inc.
Same weakness: CWE-129

V. Comments for CVE-2026-16651

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