Authorization bypass when bypass policy condition evaluates to true
Noroxi assessment
Priority: Monitor (action score 34/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.66% (FIRST EPSS); higher than 50.6% of all records.
- Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
- According to CISA the attack is automatable: targets can be found by mass scanning.
- Fixed version: ash-project ash 3.7.1, 8b83efa225f657bfc3656ad8ee8485f9b2de923d.
Low priority for now. Upgrade to ash-project ash 3.7.1, 8b83efa225f657bfc3656ad8ee8485f9b2de923d or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
Incorrect Authorization vulnerability in ash-project ash allows Authentication Bypass. This issue affects ash: from 3.6.3 before 3.7.1.
- Published
- Oct 17, 2025
- Updated
- Sep 22, 2026
- EPSS
- 0.6% · 50th percentile
- CWE
- CWE-863
Report tools
Action score
34
Monitor
Low priority for now.
- CVSS
- 34 / 40 · 8.6 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.6%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · EEF
- 8.6
- NVD has not scored this yet; the score shown is the CNA’s.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
—
Versions reported by the vendor
Affected version ranges reported by the assigning authority (EEF). Independent of NVD's CPE analysis and usually ahead of it.
ash-project ash
- 3.6.3 and later · before 3.7.1affected · semver
- 79749c2685ea031ebb2de8cf60cc5edced6a8dd0 and later · before 8b83efa225f657bfc3656ad8ee8485f9b2de923daffected · git
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Hex | ash | from 3.6.3 · before 3.7.1 | 3.7.1 |
Same product
ash-project: all recordsOther highest-scoring records for the same primary product.
- CVE-2025-48043Bypass and runtime policies that can never pass may be incorrectly applied in filter authorization34Monitor
- CVE-2026-94201Filtering an :atom attribute with unsafe_to_atom? can exhaust the BEAM atom table in Ash32Monitor
- CVE-2025-48042Before action hooks may execute in certain scenarios despite a request being forbidden28Monitor
- CVE-2026-101028Ash.count, Ash.exists and Ash.aggregate skip related resources' read policies in filters and sorts24Monitor
- CVE-2026-86338Ash field policies do not filter-nil forbidden calculations and aggregates, enabling an information-disclosure oracle24Monitor
- CVE-2026-93477Private action arguments can be set by user input on the bulk destroy and bulk update paths in Ash23Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| ash-project ash | 3.7.1 | Vendor (CNA) |
| ash-project ash | 8b83efa225f657bfc3656ad8ee8485f9b2de923d | Vendor (CNA) |
| Hex:ash | 3.7.1 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- Jechol Leefinder
- Zach Danielremediation reviewer
- Jonatan Männchen / EEFanalyst
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2025-480437 days apartBypass and runtime policies that can never pass may be incorrectly applied in filter authorization34Monitor
- CVE-2025-4804240 days apartBefore action hooks may execute in certain scenarios despite a request being forbidden28Monitor
- CVE-2026-101028357 days apartAsh.count, Ash.exists and Ash.aggregate skip related resources' read policies in filters and sorts24Monitor
- CVE-2026-82747319 days apartAsh.Policy.Authorizer returns records denied by a runtime read policy to any actor23Monitor
- CVE-2026-82749319 days apartAsh relationship parent(...) filter degrades to an IS NULL match when the parent field is unresolved, leaking scoped records23Monitor
- CVE-2026-82748319 days apartAsh.Actions.Aggregate authorizes an aggregate under one action but computes it under another8Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- Integrity
- Availability
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- X
Weakness class (CWE)
CWE-863 · Incorrect AuthorizationCVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (4 more)Show less
Vendor advisories and official records. Exploit/PoC links are deliberately left out.