CVE-2026-74799

9.2 criticalEPSS 0.5%

Critical (9.2). EPSS 0.5% chance of exploitation in the next 30 days.

SiYuan before 3.7.4 registers Go net/http/pprof debug endpoints including heap and goroutine dumps without authentication when --mode flag is not set to exactly prod. Attackers can access /debug/pprof/heap and related endpoints to extract in-memory secrets including AccessAuthCode and AI provider API keys.

Severity

CVSS 4.0

9.2 critical

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:L/SC:H/SI:N/SA:L

CVSS 3.1

9.3 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 45% of CVEs (scores of 2026-10-31)
CWE: CWE-215
Published: 2026-08-17
Modified: 2026-08-26
Record from: the NVD, synced 2026-10-19

References

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-9cqq-p2hw-mj3f
https://www.vulncheck.com/advisories/siyuan-before-unauthenticated-debug-endpoint-information-disclosure
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-9cqq-p2hw-mj3f

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