CVE-2026-72794

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

Score 8.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-12. A secondary CVSS source baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Elevated
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.6Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

siyuan versions before v3.7.4 expose the session cookie signing key through the /api/system/getConf endpoint to unauthenticated users in publish mode. Attackers can retrieve the CookieKey value and forge valid session cookies to impersonate users or gain administrative access.

CVSS v3
8.6
EG Score
8.6HIGHmedium confidence
EG Risk
70
EG Risk 70/100CISA SSVC

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
Severity86% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
34th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 12, 2026

Last Modified

August 26, 2026

Advisory Details (2)

Auto-updated Aug 12, 2026
Patch available.
generic

siyuan before v3.7.4 Session Cookie Key Disclosure via getConf | Advisories | VulnCheck

https://www.vulncheck.com/advisories/siyuan-before-session-cookie-key-disclosure-via-getconf
github Patch Available🟡 PoC Available

The session-cookie signing key (Conf.CookieKey) is returned to anonymous readers by /api/system/getConf · Advisory · siyuan-note/siyuan · GitHub

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-34fj-mwm6-fjfg

Vendor Advisories for CVE-2026-72794(1)

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

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFix by version rangeDependents
github.com/siyuan-note/siyuan/kernel—
  • every version up to 0.0.0-20260725123945-77421530be4a: fixed in 0.0.0-20260725123945-77421530be4a
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 45× 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.

Showing the most recent 100 of 138 total refreshes for this CVE.

  1. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-03 19:57 UTCEG score recompute
  3. 2026-10-03 14:26 UTCEPSS rescore
  4. 2026-10-02 21:59 UTCEG score recompute
  5. 2026-10-02 08:19 UTCEG score recompute
  6. 2026-10-01 19:50 UTCEPSS rescore
  7. 2026-09-30 21:54 UTCEG score recompute
  8. 2026-09-29 04:30 UTCEG score recompute
  9. 2026-09-28 13:58 UTCEG score recompute
  10. 2026-09-28 13:52 UTCEPSS rescore
  11. 2026-09-28 01:19 UTCEG score recompute
  12. 2026-09-27 13:48 UTCEPSS rescore
  13. 2026-09-27 09:53 UTCEG score recompute
  14. 2026-09-26 15:59 UTCEPSS rescore
  15. 2026-09-25 03:40 UTCEG score recompute
  16. 2026-09-24 01:36 UTCEG score recompute
  17. 2026-09-23 17:54 UTCEPSS rescore
  18. 2026-09-22 23:50 UTCEG score recompute
  19. 2026-09-21 22:30 UTCEG score recompute
  20. 2026-09-21 21:09 UTCEPSS rescore
  21. 2026-09-21 09:49 UTCEG score recompute
  22. 2026-09-20 20:16 UTCEPSS rescore
  23. 2026-09-19 16:25 UTCEG score recompute
  24. 2026-09-19 03:46 UTCEG score recompute
  25. 2026-09-18 19:28 UTCEPSS rescore
Show 75 more
  1. 2026-09-18 02:23 UTCEG score recompute
  2. 2026-09-17 00:19 UTCEG score recompute
  3. 2026-09-16 14:08 UTCEPSS rescore
  4. 2026-09-16 05:15 UTCEPSS rescore
  5. 2026-09-15 13:12 UTCEG score recompute
  6. 2026-09-15 03:12 UTCEPSS rescore
  7. 2026-09-13 23:04 UTCEG score recompute
  8. 2026-09-12 21:46 UTCEG score recompute
  9. 2026-09-12 15:02 UTCEPSS rescore
  10. 2026-09-12 09:07 UTCEG score recompute
  11. 2026-09-11 20:28 UTCEG score recompute
  12. 2026-09-11 14:53 UTCEPSS rescore
  13. 2026-09-10 19:10 UTCEG score recompute
  14. 2026-09-10 09:35 UTCEPSS rescore
  15. 2026-09-09 05:13 UTCEG score recompute
  16. 2026-09-08 22:01 UTCEPSS rescore
  17. 2026-09-07 18:33 UTCEG score recompute
  18. 2026-09-06 17:14 UTCEG score recompute
  19. 2026-09-06 13:48 UTCEPSS rescore
  20. 2026-09-05 15:52 UTCEG score recompute
  21. 2026-09-04 14:13 UTCEG score recompute
  22. 2026-09-04 14:13 UTCGHSA enrichment
  23. 2026-09-04 05:07 UTCEPSS rescore
  24. 2026-09-04 01:25 UTCGHSA enrichment
  25. 2026-09-03 12:43 UTCGHSA enrichment
  26. 2026-09-02 23:28 UTCEG score recompute
  27. 2026-09-02 23:28 UTCGHSA enrichment
  28. 2026-09-02 14:12 UTCEPSS rescore
  29. 2026-09-02 01:52 UTCEG score recompute
  30. 2026-09-02 01:52 UTCGHSA enrichment
  31. 2026-09-01 13:54 UTCEPSS rescore
  32. 2026-09-01 13:14 UTCEG score recompute
  33. 2026-09-01 13:14 UTCGHSA enrichment
  34. 2026-09-01 04:40 UTCEPSS rescore
  35. 2026-09-01 04:40 UTCEPSS rescore
  36. 2026-09-01 00:24 UTCGHSA enrichment
  37. 2026-08-31 11:43 UTCGHSA enrichment
  38. 2026-08-30 22:33 UTCEG score recompute
  39. 2026-08-30 22:33 UTCGHSA enrichment
  40. 2026-08-30 19:18 UTCEPSS rescore
  41. 2026-08-30 19:17 UTCEPSS rescore
  42. 2026-08-30 09:54 UTCEG score recompute
  43. 2026-08-30 09:54 UTCGHSA enrichment
  44. 2026-08-30 01:22 UTCEPSS rescore
  45. 2026-08-29 21:11 UTCGHSA enrichment
  46. 2026-08-29 08:33 UTCEG score recompute
  47. 2026-08-29 08:33 UTCGHSA enrichment
  48. 2026-08-28 21:42 UTCEPSS rescore
  49. 2026-08-28 09:11 UTCGHSA enrichment
  50. 2026-08-27 20:01 UTCEG score recompute
  51. 2026-08-27 20:01 UTCGHSA enrichment
  52. 2026-08-27 14:25 UTCEPSS rescore
  53. 2026-08-27 07:22 UTCGHSA enrichment
  54. 2026-08-26 17:17 UTCEG score recompute
  55. 2026-08-26 17:16 UTCGHSA enrichment
  56. 2026-08-26 14:47 UTCEPSS rescore
  57. 2026-08-26 07:32 UTCGHSA enrichment
  58. 2026-08-25 18:53 UTCEG score recompute
  59. 2026-08-25 18:53 UTCGHSA enrichment
  60. 2026-08-25 13:49 UTCEPSS rescore
  61. 2026-08-25 06:14 UTCGHSA enrichment
  62. 2026-08-24 17:34 UTCEG score recompute
  63. 2026-08-24 17:34 UTCGHSA enrichment
  64. 2026-08-24 04:55 UTCGHSA enrichment
  65. 2026-08-23 16:16 UTCGHSA enrichment
  66. 2026-08-23 03:38 UTCEG score recompute
  67. 2026-08-23 03:38 UTCGHSA enrichment
  68. 2026-08-23 00:19 UTCEPSS rescore
  69. 2026-08-22 14:59 UTCGHSA enrichment
  70. 2026-08-22 02:20 UTCEG score recompute
  71. 2026-08-22 02:20 UTCGHSA enrichment
  72. 2026-08-21 23:49 UTCEPSS rescore
  73. 2026-08-21 13:38 UTCGHSA enrichment
  74. 2026-08-21 00:56 UTCEG score recompute
  75. 2026-08-21 00:56 UTCGHSA enrichment

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-72794?
CVE-2026-72794 is a high vulnerability published on August 12, 2026. siyuan versions before v3.7.4 expose the session cookie signing key through the /api/system/getConf endpoint to unauthenticated users in publish mode. Attackers can retrieve the CookieKey value and forge valid session cookies to impersonate users or gain administrative access.
When was CVE-2026-72794 disclosed?
CVE-2026-72794 was first published on August 12, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72794 actively exploited?
CVE-2026-72794 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (34th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72794?
CVE-2026-72794 has a CVSS base score of 8.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72794?
A fix for CVE-2026-72794 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-72794 are linked in the Vendor Advisories panel on this page.

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