CVE-2026-109310

Medium

Description

SiYuan v3.1.12 before v3.8.6 fails to restrict the Sprig template function map in the /api/icon/getDynamicIcon content parameter, allowing resource exhaustion. A publish reader, or anyone when publish auth is disabled, can use uncapped functions like until to OOM-kill the kernel with one request.

SeverityMedium

CVSS6.5

Exploit probability—

ProductSiyuan

PublishedOct 12, 2026

First seenOct 12, 2026

Weakness typeCWE-770Allocation of resources without limits

How to fix

Update

siyuan-note siyuan3.8.6 or later

Vendor advisories

github.com/siyuan-note/siyuan/security/advisories/GHSA-cxwr-r7cq-xw52

Affected products

Product	Affected versions	Fixed in
siyuan-note siyuan	3.1.12 ≤ v < 3.8.6	3.8.6

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