CVE-2026-73045Disclosure

LOWCVSS 8.7 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

SiYuan before 3.7.4 contains an improper restriction of excessive authentication attempts vulnerability in the authFilePublishAccess endpoint that allows unauthenticated attackers to brute-force per-notebook publish passwords. Attackers can submit unbounded password guesses without rate limiting or CAPTCHA to gain access to password-protected published notebooks.

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0.5/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-307

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Threat summary

Patch or workaround signal is available
2 mentions across 1 observed day

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 2 signals
Disclosure: 1 classified signal
General: 1 classified signal
2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d

Signal classification2 categories

Disclosure

150.0%

General

150.0%

Referenced assets2 URLs

By indicator

Full discourse2 posts

Vulmon Vulnerability Feed@VulmonFeeds46d
General
CVE-2026-73045 SiYuan Improper Authentication Attempt Restriction Allows Brute-F... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-73045 Vulnerability Alert Subscriptions: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=1
Post summary
The tweet lists CVE‑2026‑73045, notes it involves Brute‑Force authentication issues in SiYuan, and links to a Vulmon vulnerability details page.
00001121
4.1K followersView on X
ADK Cyber@ADKCyber45d
Disclosure
CVE-2026-73045 (CVSS 8.7) in SiYuan < 3.7.4 allows unauthenticated brute-force on auth endpoint. Update if your environment uses it. via NVD Recent High CVSS #CyberSecurity #InfoSec #Vulnerability https://t.co/Hpk2qNT39n
Post summary
The tweet announces CVE‑2026‑73045, a high‑CVSS brute‑force vulnerability in SiYuan versions below 3.7.4, and urges users to update.
0000050
93 followersView on X

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