CVE-2026-86777CWE-862broken-access-control

CVE-2026-86777

Medium · published September 9, 2026

CVSS v3.1
5.3
EPSS
1%
Percentile
45.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00560 · 45.8th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-09-09T14:22Z
References (9)
https://github.com/AlchemyCMS/alchemy_cms · [email protected]https://github.com/AlchemyCMS/alchemy_cms/blob/v8.3.5/app/controllers/alchemy/api/nodes_controller.rb · [email protected]https://github.com/AlchemyCMS/alchemy_cms/commit/5e2cd16a806c9d2df3eb6e3c889402487e0085b6 · [email protected]https://github.com/AlchemyCMS/alchemy_cms/commit/9bdb98496d6f17277ed05dd1abc3188f880aa554 · [email protected]https://github.com/AlchemyCMS/alchemy_cms/releases/tag/v7.4.16 · [email protected]https://github.com/AlchemyCMS/alchemy_cms/releases/tag/v8.3.6 · [email protected]https://github.com/AlchemyCMS/alchemy_cms/security/advisories/GHSA-wppq-8h64-w78r · [email protected]https://www.vulncheck.com/advisories/alchemycms-before-7.4.16-and-8-x-before-8.3.6-missing-authorization-on-get-api-nodes · [email protected]https://github.com/AlchemyCMS/alchemy_cms/security/advisories/GHSA-wppq-8h64-w78r · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 11 SEP 03:19Z
    EPSS moved — → 0%
    epss
  • 09 SEP 10:07Z
    AlchemyCMS before 7.4.16 and 8.x before 8.3.6 Missing Authorization on GET /api/nodes
    cvelistv5