CVE-2026-85175

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-03. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

SiYuan versions <= 3.8.1 (fixed in v3.8.2) contain an incomplete blocklist in the IsForbiddenAbsPath() function (kernel/util/path_guard.go), which only blocks conf/conf.json by exact match and does not restrict the TLS private key (conf/key.pem) or CA private key (conf/ca.key) stored in the same conf/ directory. Because the getFile handler skips the blocklist for RoleAdministrator and all authenticated users receive RoleAdministrator in v3.8.1, any user (or any client on a default no-auth-code instance) can retrieve these private keys via POST /api/file/getFile. On deployments with TLS enabled, this allows decryption of captured HTTPS traffic (key.pem) and forging of certificates trusted by clients that imported SiYuan's CA (ca.key).

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
44(Track)
EG Risk 44/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

September 3, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Sep 3, 2026
Patch available. Sources: github.
generic

SiYuan before v3.8.2 TLS Private Key Disclosure via getFile | Advisories | VulnCheck

https://www.vulncheck.com/advisories/siyuan-before-3.8.2-tls-private-key-disclosure-via-getfile
github Patch Available

TLS Private Keys Readable via getFile (Incomplete Blocklist) · Advisory · siyuan-note/siyuan · GitHub

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-4wwp-f6gw-6qm5

Vendor Advisories for CVE-2026-85175(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 27× in last 7d / 61× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 11:57 UTCGHSA enrichment
  2. 2026-09-18 23:57 UTCEG score recompute
  3. 2026-09-18 23:57 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 11:57 UTCGHSA enrichment
  6. 2026-09-17 23:57 UTCEG score recompute
  7. 2026-09-17 23:57 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-17 11:57 UTCGHSA enrichment
  10. 2026-09-16 23:57 UTCEG score recompute
  11. 2026-09-16 23:57 UTCGHSA enrichment
  12. 2026-09-16 14:09 UTCEPSS rescore
  13. 2026-09-16 11:56 UTCEG score recompute
  14. 2026-09-16 11:56 UTCGHSA enrichment
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-15 23:56 UTCGHSA enrichment
  17. 2026-09-15 11:55 UTCEG score recompute
  18. 2026-09-15 11:55 UTCGHSA enrichment
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-14 23:55 UTCGHSA enrichment
  22. 2026-09-14 11:55 UTCGHSA enrichment
  23. 2026-09-13 23:54 UTCEG score recompute
  24. 2026-09-13 23:54 UTCGHSA enrichment
  25. 2026-09-13 11:54 UTCGHSA enrichment
Show 36 more
  1. 2026-09-12 23:54 UTCEG score recompute
  2. 2026-09-12 23:54 UTCGHSA enrichment
  3. 2026-09-12 11:54 UTCGHSA enrichment
  4. 2026-09-11 23:54 UTCEG score recompute
  5. 2026-09-11 23:54 UTCGHSA enrichment
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 11:53 UTCEG score recompute
  9. 2026-09-11 11:53 UTCGHSA enrichment
  10. 2026-09-10 23:52 UTCGHSA enrichment
  11. 2026-09-10 11:32 UTCEG score recompute
  12. 2026-09-10 11:32 UTCGHSA enrichment
  13. 2026-09-09 23:29 UTCGHSA enrichment
  14. 2026-09-09 08:50 UTCEG score recompute
  15. 2026-09-09 08:50 UTCGHSA enrichment
  16. 2026-09-08 22:01 UTCEPSS rescore
  17. 2026-09-08 20:49 UTCGHSA enrichment
  18. 2026-09-08 02:51 UTCEG score recompute
  19. 2026-09-08 02:51 UTCGHSA enrichment
  20. 2026-09-07 14:51 UTCGHSA enrichment
  21. 2026-09-07 01:24 UTCEG score recompute
  22. 2026-09-07 01:23 UTCGHSA enrichment
  23. 2026-09-06 13:48 UTCEPSS rescore
  24. 2026-09-06 13:23 UTCGHSA enrichment
  25. 2026-09-06 01:23 UTCEG score recompute
  26. 2026-09-06 01:23 UTCGHSA enrichment
  27. 2026-09-05 15:31 UTCEPSS rescore
  28. 2026-09-05 13:23 UTCGHSA enrichment
  29. 2026-09-05 01:21 UTCEG score recompute
  30. 2026-09-05 01:21 UTCGHSA enrichment
  31. 2026-09-04 13:17 UTCGHSA enrichment
  32. 2026-09-04 01:17 UTCEG score recompute
  33. 2026-09-04 01:17 UTCGHSA enrichment
  34. 2026-09-03 13:14 UTCEG score recompute
  35. 2026-09-03 11:31 UTCEG score recompute
  36. 2026-09-03 11:29 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-85175?
CVE-2026-85175 is a high vulnerability published on September 3, 2026. SiYuan versions <= 3.8.1 (fixed in v3.8.2) contain an incomplete blocklist in the IsForbiddenAbsPath() function (kernel/util/path_guard.go), which only blocks conf/conf.json by exact match and does not restrict the TLS private key (conf/key.pem) or CA private key (conf/ca.key) stored in the same…
When was CVE-2026-85175 disclosed?
CVE-2026-85175 was first published in the National Vulnerability Database on September 3, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85175 actively exploited?
CVE-2026-85175 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 91.3% of all scored CVEs.
What is the CVSS score of CVE-2026-85175?
CVE-2026-85175 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-85175?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85175, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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