Missing authorization in B3log Symphony admin routes
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
B3log Symphony through 3.6.4 has missing authorization (CWE-862) in its permission check, which lets admin routes without a permission rule entry pass. An unauthenticated remote attacker can reach these admin routes to ignore reports, delete unused tags, or grant points without audit logging.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
Description from the CNA
B3log Symphony through 3.6.4 contains a missing authorization vulnerability that allows unauthenticated attackers to reach admin routes because PermissionMidware.check permits routes lacking permission.rule.url entries. Attackers can request /admin/report/ignore/{reportId}, /admin/tags/remove-unused, or /admin/user/{userId}/init-point to ignore reports, delete unused tags, or grant points without audit logging.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| siyuan-note | Symphony | up to 3.6.4 | — | No fix listed | CNA |
- Symphony Vendorsiyuan-note Affected up to 3.6.4 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for B3log Symphony.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
Timeline
- 2026-10-13 Threatist record created from CVE-2026-110105
- 2026-10-13 Alias added: GHSA-8g6g-5xv6-gw9w
- 2026-10-14 Priority changed: MEDIUM → LOW
- 2026-10-26 CISA SSVC decision points changed
- 2026-10-26 Priority changed: LOW → HIGH
References
Advisory 1
Other 3
- https://github.com/88250/symphony/blob/827a7dd8b74316aa62f370f893a8382a8b45ba0f/src/main/java/org/b3log/symphony/processor/middleware/PermissionMidware.java#L94-L97
- https://github.com/88250/symphony/blob/827a7dd8b74316aa62f370f893a8382a8b45ba0f/src/main/java/org/b3log/symphony/processor/AdminProcessor.java#L316-L386
- https://github.com/88250/symphony
More siyuan-note vulnerabilities
- TI-2026-48492 SiYuan before v3.7.3 SQL Injection via searchDocs CVSS 4.0CRITICAL 9.9
- TI-2026-48491 SiYuan before v3.7.3 SQL Injection via searchEmbedBlock CVSS 4.0CRITICAL 9.9
- TI-2026-48490 SiYuan before v3.7.3 SQL Injection via fullTextSearchAssetContent CVSS 4.0CRITICAL 9.9
- TI-2026-47010 SiYuan before v3.7.2 Unauthenticated Administrator Takeover via MCP CVSS 4.0CRITICAL 10.0
- TI-2026-26050 SiYuan has directory traversal within its publishing service CVSS 3.1CRITICAL 9.8
- TI-2026-25256 SiYuan: Authorization Bypass Allows Arbitrary SQL Execution via Search API CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-110105 · CVE Program
- CVE-2026-110105 · NVD
- FIRST EPSS
- GHSA-8g6g-5xv6-gw9w · GitHub Advisory Database · CC BY 4.0
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