CVE-2026-57579
What it is
Alchemy is an open source content management system engine written in Ruby on Rails. Prior to 7.4.15, 8.0.15, 8.1.14, and 8.2.6, the unauthenticated GET /api/pages/nested endpoint implemented by Api::PagesController#nested in app/controllers/alchemy/api/pages_controller.rb returns an unfiltered page tree because it performs no authorization and does not scope descendants by the caller's ability. Anonymous callers can retrieve restricted and unpublished page metadata that the sibling show action denies. When elements=true is supplied, PageTreeSerializer also returns element and ingredient content from restricted pages because PageTreePreloader and the serializer do not apply an ability check to those records. This issue is fixed in versions 7.4.15, 8.0.15, 8.1.14, and 8.2.6.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure.
- Exploit odds
- 0.6% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.6% in the next 30 days (EPSS).
- Severity: 7.5 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.6% · EPSS, next 30 days
- Weakness
- CWE-862 · Missing authorization
- Record status
- Deferred
Attack profile CVSS 3.1 · 7.5
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-57579.md and follow it. Check whether this project is affected by CVE-2026-57579. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/AlchemyCMS/alchemy_cms/commit/30888fb41d8b71fdfb3b116a7efccd851d73e1f3
- https://github.com/AlchemyCMS/alchemy_cms/commit/5620e76f0d274d6f69f34281b7e46d01879f6b99
- https://github.com/AlchemyCMS/alchemy_cms/commit/8417a2e9dcb00653c8b238f8a040b09532dd4c0f
- https://github.com/AlchemyCMS/alchemy_cms/commit/85702d9fe4e247649b1358900c5af853e83b4a3a
- https://github.com/AlchemyCMS/alchemy_cms/commit/a082dd0afe188d199f386a5e1db01987d0de807f
- https://github.com/AlchemyCMS/alchemy_cms/pull/3982
- https://github.com/AlchemyCMS/alchemy_cms/releases/tag/v7.4.15
- https://github.com/AlchemyCMS/alchemy_cms/releases/tag/v8.0.15
- https://github.com/AlchemyCMS/alchemy_cms/releases/tag/v8.1.14
- https://github.com/AlchemyCMS/alchemy_cms/releases/tag/v8.2.6
References
- https://github.com/AlchemyCMS/alchemy_cms/commit/30888fb41d8b71fdfb3b116a7efccd851d73e1f3
- https://github.com/AlchemyCMS/alchemy_cms/commit/5620e76f0d274d6f69f34281b7e46d01879f6b99
- https://github.com/AlchemyCMS/alchemy_cms/commit/8417a2e9dcb00653c8b238f8a040b09532dd4c0f
- https://github.com/AlchemyCMS/alchemy_cms/commit/85702d9fe4e247649b1358900c5af853e83b4a3a
- https://github.com/AlchemyCMS/alchemy_cms/commit/a082dd0afe188d199f386a5e1db01987d0de807f
- https://github.com/AlchemyCMS/alchemy_cms/pull/3982
- https://github.com/AlchemyCMS/alchemy_cms/releases/tag/v7.4.15
- https://github.com/AlchemyCMS/alchemy_cms/releases/tag/v8.0.15
- https://github.com/AlchemyCMS/alchemy_cms/releases/tag/v8.1.14
- https://github.com/AlchemyCMS/alchemy_cms/releases/tag/v8.2.6
- https://github.com/AlchemyCMS/alchemy_cms/security/advisories/GHSA-mqq5-j7w8-2hgh
- https://github.com/AlchemyCMS/alchemy_cms/security/advisories/GHSA-mqq5-j7w8-2hgh