CVE-2026-85583

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-04. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

SiYuan versions before v3.8.2 contain a path traversal vulnerability in the reader-accessible file-read endpoint that follows symlinks when opening authorized asset paths. Attackers with reader role can request a logical asset under data/assets/ that is a symlink to a file outside the workspace and receive the target file bytes, bypassing workspace boundary restrictions.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
40%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 14, 2026

Advisory Details (2)

Auto-updated Sep 4, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

SiYuan before v3.8.2 Path Traversal via symlink in file API | Advisories | VulnCheck

https://www.vulncheck.com/advisories/siyuan-before-3.8.2-path-traversal-via-symlink-in-file-api
github Patch Available🟡 PoC Available

Reader-role file API follows workspace assets symlinks outside the workspace · Advisory · siyuan-note/siyuan · GitHub

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-g7gf-v79m-jwrm

Vendor Advisories for CVE-2026-85583(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 22× in last 7d / 49× 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. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-20 18:49 UTCGHSA enrichment
  3. 2026-09-19 19:21 UTCEG score recompute
  4. 2026-09-19 19:21 UTCGHSA enrichment
  5. 2026-09-18 19:53 UTCEG score recompute
  6. 2026-09-18 19:53 UTCGHSA enrichment
  7. 2026-09-18 19:28 UTCEPSS rescore
  8. 2026-09-17 20:24 UTCEG score recompute
  9. 2026-09-17 20:24 UTCGHSA enrichment
  10. 2026-09-17 19:32 UTCEPSS rescore
  11. 2026-09-16 19:23 UTCEG score recompute
  12. 2026-09-16 19:23 UTCGHSA enrichment
  13. 2026-09-16 14:09 UTCEPSS rescore
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 19:55 UTCEG score recompute
  16. 2026-09-15 19:55 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-14 20:27 UTCEG score recompute
  20. 2026-09-14 20:27 UTCGHSA enrichment
  21. 2026-09-14 19:40 UTCEG score recompute
  22. 2026-09-14 19:40 UTCGHSA enrichment
  23. 2026-09-13 21:16 UTCEG score recompute
  24. 2026-09-13 21:16 UTCGHSA enrichment
  25. 2026-09-12 21:48 UTCEG score recompute
Show 24 more
  1. 2026-09-12 21:48 UTCGHSA enrichment
  2. 2026-09-11 22:20 UTCEG score recompute
  3. 2026-09-11 22:20 UTCGHSA enrichment
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 14:53 UTCEPSS rescore
  6. 2026-09-10 22:51 UTCEG score recompute
  7. 2026-09-10 22:51 UTCGHSA enrichment
  8. 2026-09-09 23:23 UTCEG score recompute
  9. 2026-09-09 23:23 UTCGHSA enrichment
  10. 2026-09-08 22:01 UTCEPSS rescore
  11. 2026-09-08 20:19 UTCGHSA enrichment
  12. 2026-09-08 10:22 UTCEG score recompute
  13. 2026-09-08 10:22 UTCGHSA enrichment
  14. 2026-09-07 10:51 UTCEG score recompute
  15. 2026-09-07 10:51 UTCGHSA enrichment
  16. 2026-09-06 13:48 UTCEPSS rescore
  17. 2026-09-06 11:20 UTCEG score recompute
  18. 2026-09-06 11:20 UTCGHSA enrichment
  19. 2026-09-05 15:31 UTCEPSS rescore
  20. 2026-09-05 11:52 UTCEG score recompute
  21. 2026-09-05 11:51 UTCGHSA enrichment
  22. 2026-09-04 12:22 UTCEG score recompute
  23. 2026-09-04 11:34 UTCEG score recompute
  24. 2026-09-04 11:33 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-85583?
CVE-2026-85583 is a medium vulnerability published on September 4, 2026. SiYuan versions before v3.8.2 contain a path traversal vulnerability in the reader-accessible file-read endpoint that follows symlinks when opening authorized asset paths. Attackers with reader role can request a logical asset under data/assets/ that is a symlink to a file outside the workspace and…
When was CVE-2026-85583 disclosed?
CVE-2026-85583 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85583 actively exploited?
CVE-2026-85583 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 59.7% of all scored CVEs.
What is the CVSS score of CVE-2026-85583?
CVE-2026-85583 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-85583?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85583, 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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