How severe is CVE-2025-48042?

No CVSS score has been assigned to CVE-2025-48042 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2025-48042?

CVE-2025-48042 affects the following packages: ash (Hex). Ecosystems affected: Hex.

How do I fix CVE-2025-48042?

Update ash to 3.5.39 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-48042 is resolved across your whole dependency graph.

How do I detect CVE-2025-48042 in my Hex dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ash. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

How do I mitigate CVE-2025-48042 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against CVE-2025-48042?

O3 pinpoints whether CVE-2025-48042 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is CVE-2025-48042 actively exploited in the wild?

No public exploit code has been indexed for CVE-2025-48042 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2025-48042?

CVE-2025-48042 has an EPSS (Exploit Prediction Scoring System) score of 0.3%, placing it in the 21th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

When was CVE-2025-48042 published, and has it been updated?

CVE-2025-48042 was published on September 7, 2025 and was last updated on April 10, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CVE-2025-48042: ash

EPSS Exploitation Probability

via FIRST.org ↗

0.3%probability of exploitation in next 30 days

Lower Risk21th percentile+0.20%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected

💧ash

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Hex packages — download data is not available via public APIs for these ecosystems.

Description

Incorrect Authorization vulnerability in ash-project ash allows Exploiting Incorrectly Configured Access Control Security Levels. This vulnerability is associated with program files lib/ash/actions/create/bulk.ex, lib/ash/actions/destroy/bulk.ex, lib/ash/actions/update/bulk.ex and program routines 'Elixir.Ash.Actions.Create.Bulk':run/5, 'Elixir.Ash.Actions.Destroy.Bulk':run/6, 'Elixir.Ash.Actions.Update.Bulk:run'/6.

This issue affects ash: from pkg:hex/ash before pkg:hex/[email protected], before 3.5.39, before 5d1b6a5d00771fd468a509778637527b5218be9a.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
💧Hex	`ash`	all versions	3.5.39

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ash. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update ash to 3.5.39 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-48042 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether CVE-2025-48042 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to CVE-2025-48042. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Incorrect Authorization vulnerability in ash-project ash allows Exploiting Incorrectly Configured Access Control Security Levels. This vulnerability is associated with program files lib/ash/actions/create/bulk.ex, lib/ash/actions/destroy/bulk.ex, lib/ash/actions/update/bulk.ex and program routines 'Elixir.Ash.Actions.Create.Bulk':run/5, 'Elixir.Ash.Actions.Destroy.Bulk':run/6, 'Elixir.Ash.Actions.Update.Bulk:run'/6. This issue affects ash: from pkg:hex/ash before pkg:hex/[email protected], before 3.5.39, before 5d1b6a5d00771fd468a509778637527b5218be9a.

O3 Security · Impact-Aware SCA

Is CVE-2025-48042 in your dependencies?

O3 detects CVE-2025-48042 across Hex dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my dependencies How O3 SCA works

CVE-2025-48042