CVE-2026-72801 SiYuan before v3.7.4 Information Disclosure via Encryption Key Material
Attackers can retrieve encryption key material from unauthenticated endpoints in publish mode to crack master passwords offline.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-72801?
CVE-2026-72801 is a high-severity vulnerability in siyuan-note siyuan, published on 12 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
SiYuan versions before v3.7.4 disclose encrypted-notebook key-derivation material and wrapped data keys through unauthenticated endpoints in publish mode. Attackers can retrieve Argon2id salt, cost parameters, password verifiers, and wrapped notebook keys to perform unlimited offline master-password cracking without rate limiting.
Weakness: CWE-522
Which versions are affected by CVE-2026-72801?
3 open source packages ship an affected version, including github.com/siyuan-note/siyuan/kernel.
| Package | Affected | Fixed in |
|---|---|---|
github.com/siyuan-note/siyuan/kernel Go | All versions | 0.0.0-20260724102025-3bc014c7dc32 |
github.com/siyuan-note/siyuan/kernel Go | All versions | 0.0.0-20260724102025-3bc014c7dc32 |
github.com/siyuan-note/siyuan/kernel Go | All versions | 0.0.0-20260724102025-3bc014c7dc32 |
How do I fix CVE-2026-72801?
Upgrade github.com/siyuan-note/siyuan/kernel to 0.0.0-20260724102025-3bc014c7dc32 or later.
Is CVE-2026-72801 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-72801 exists.
Sources
Also known as GHSA-8x84-r2ff-h8pq, GO-2026-6392.