AlchemyCMS before 7.4.16 and 8.x before 8.3.6 Missing Authorization on GET /api/nodes
Priority HIGH 70CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
AlchemyCMS versions before 7.4.16 and 8.x before 8.3.6 fail to authorize access to the GET /api/nodes endpoint, allowing unauthenticated attackers to retrieve all navigation nodes. Attackers can access the endpoint without authentication to disclose restricted page names, URL paths, and internal URLs from all sites and languages.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0056 46th percentileScored 2026-11-07
Fix Fixed alchemy_cms (AlchemyCMS): 7.4.16, 8.3.6
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 |
|---|---|---|---|---|---|
| AlchemyCMS | alchemy_cms | before 7.4.16; 8.0.0 to before 8.3.6 | 7.4.16, 8.3.6 | Patch available | CNA |
- alchemy_cms VendorAlchemyCMS Affected before 7.4.16; 8.0.0 to before 8.3.6 Fixed in 7.4.16, 8.3.6 Patch available CNA
Remediation
- Fix · CNA alchemy_cms (AlchemyCMS) Fixed in 7.4.16, 8.3.6
Timeline
- 2026-10-02 Threatist record created from CVE-2026-86777
- 2026-10-03 Alias added: GHSA-wqff-85p9-hwc3
References
More AlchemyCMS vulnerabilities
- TI-2026-41430 Alchemy: Unauthenticated nested page API leaks restricted & unpublished content CVSS 3.1HIGH 7.5
- TI-2026-19243 AlchemyCMS has Authenticated Remote Code Execution (RCE) via eval injection in ResourcesHelper CVSS 3.1CRITICAL 9.9
- TI-2018-12927 A Stored XSS vulnerability has been discovered in version 4.1.0 of AlchemyCMS via the… CVSS 3.0MEDIUM 6.1
Sources
- CVE-2026-86777 · CVE Program
- CVE-2026-86777 · NVD
- FIRST EPSS
- GHSA-wqff-85p9-hwc3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences