CVE-2025-48042 Before action hooks may execute in certain scenarios despite a request being forbidden
Attackers can trigger before-action hooks in the Ash library even when requests are forbidden, bypassing intended access controls.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-48042?
CVE-2025-48042 is a high-severity missing authorization vulnerability in ash-project ash, published on 7 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Incorrect Authorization vulnerability in ash-project ash allows Exploiting Incorrectly Configured Access Control Security Levels.
This issue affects ash: from 0.1.1 before 3.5.39.
Weakness: CWE-863
Which versions are affected by CVE-2025-48042?
3 open source packages ship an affected version, including ash.
| Package | Affected | Fixed in |
|---|---|---|
ash Hex | All versions | 3.5.39 |
ash Hex | All versions | 3.5.39 |
ash Hex | From 0.1.1 | 3.5.39 |
How do I fix CVE-2025-48042?
Upgrade ash to 3.5.39 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-48042 being exploited?
There is no known exploitation of CVE-2025-48042 in the wild and no public exploit code.
Sources
Also known as EEF-CVE-2025-48042, GHSA-jj4j-x5ww-cwh9.