CVE-2024-55660 SiYuan has an SSTI via /api/template/renderSprig

What is CVE-2024-55660?

CVE-2024-55660 is a medium-severity code injection vulnerability in B3log Siyuan, published on 11 Dec 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

SiYuan is a personal knowledge management system. Prior to version 3.1.16, SiYuan's `/api/template/renderSprig` endpoint is vulnerable to Server-Side Template Injection (SSTI) through the Sprig template engine. Although the engine has limitations, it allows attackers to access environment variables. Version 3.1.16 contains a patch for the issue.

Weakness: CWE-94, CWE-1336

Which versions are affected by CVE-2024-55660?

3 open source packages ship an affected version, including github.com/siyuan-note/siyuan/kernel. It affects 1 product.

Products include B3log Siyuan.

How do I fix CVE-2024-55660?

Upgrade to a fixed version.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2024-55660 being exploited?

There is no known exploitation of CVE-2024-55660 in the wild and no public exploit code.

Other vulnerabilities in B3log Siyuan

• CVE-2026-32938 SiYuan has an Arbitrary File Read in its Desktop Publish Service Critical 9.9
• CVE-2026-33669 SiYuan has Arbitrary Document Reading within the Publishing Service Critical 9.8
• CVE-2026-33670 SiYuan has directory traversal within its publishing service Critical 9.8
• CVE-2026-32767 SiYuan: Authorization Bypass Allows Arbitrary SQL Execution via Search API Critical 9.8
• CVE-2024-53504 SQL injection in n/a Critical 9.8

All B3log Siyuan vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-4pjc-pwgq-q9jp, GO-2024-3324.