Vulnerability · Published Oct 12, 2026 · Assigned by VulnCheck
CVE-2026-109310SiYuan v3.1.12 before v3.8.6 Denial of Service via getDynamicIcon Template
Medium 6.5
In plain English
A medium-severity resource allocation without limits in siyuan from siyuan-note. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.4%top 67.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| siyuan-note | siyuan | 3.1.12 – before 3.8.6 |
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
- GitHub Security Advisory (GHSA-cxwr-r7cq-xw52) vendor-advisory
- VulnCheck Advisory: SiYuan v3.1.12 before v3.8.6 Denial of Service via getDynamicIcon Template third-party-advisory