Security readout for executives and security teams
Plain-English summary
Ash applications may grant access that policy authors intended to deny. Under affected filter-authorization conditions, bypass rules and runtime policies that cannot succeed may be applied incorrectly, potentially exposing or allowing modification of protected data. Ash versions from 0.1.0 through versions before 3.6.2 are affected.
Executive priority
Treat this as a high-priority authorization update, especially for internet-facing systems protecting sensitive records. Establish affected-version exposure immediately and upgrade promptly. Escalate systems where low-privileged users can query or modify high-value data, because successful exploitation could bypass intended access controls without user interaction.
Technical view
CVE-2025-48043 is a CWE-863 incorrect-authorization flaw in Ash Policy Authorizer’s strict_filters/2 logic. Incorrect handling of bypass and unsatisfiable runtime policies can produce authorization filters that permit unauthorized access. CVSS 4.0 scores it 8.6: network-reachable, low complexity, low privileges, no user interaction, with high confidentiality and integrity impact.
Likely exposure
Exposure is likely where an application uses Ash before 3.6.2 and relies on filter-based policy authorization involving bypass or runtime policies. Merely installing Ash does not establish exploitability. The supplied sources do not identify which application configurations, resources, or endpoints are vulnerable, so deployment-specific policy review and testing are required.
Exploitation context
The bundle does not report known active exploitation, and the CVE is not listed as KEV. The CVSS vector indicates a network-accessible, low-complexity path requiring low privileges and no user interaction. This describes potential attack conditions, not proof that every affected deployment is reachable or exploitable.
Researcher notes
The vulnerable routine is Elixir.Ash.Policy.Authorizer.strict_filters/2 in lib/ash/policy/authorizer/authorizer.ex. The supplied record identifies the affected range and patch commit but provides limited configuration-level preconditions. Assess authorization outcomes, not only policy definitions, and compare affected behavior with 3.6.2 or later. No public exploitation evidence is supplied.
Mitigation direction
- Upgrade Ash to version 3.6.2 or later.
- Prioritize applications exposing policy-protected resources to untrusted or low-privileged users.
- Review vendor guidance and the referenced patch before applying deployment-specific workarounds.
- Temporarily restrict sensitive endpoints if timely upgrading is impossible and policy correctness cannot be demonstrated.
Validation and detection
- Inventory deployed Ash versions, including resolved transitive dependencies and production lockfiles.
- Identify resources using filter authorization, bypass policies, or runtime checks that cannot pass.
- Test denied low-privilege access against sensitive read and modification operations.
- Confirm production runs Ash 3.6.2 or later after deployment.
- Run authorization regression tests covering bypass, deny, and unsatisfiable runtime-policy combinations.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-863: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-48043 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.6 (4.0)
- Known Exploited
- No
- Published
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
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
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——EEFVulnerability scoring details
Base CVSS 4.0 score
8.6HighVector: 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
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/ash-project/ash/security/advisories/GHSA-7r7f-9xpj-jmr7CVE reference, EEF · vendor-advisory, related
- https://cna.erlef.org/cves/CVE-2025-48043.htmlCVE reference, EEF · related
- https://osv.dev/vulnerability/EEF-CVE-2025-48043CVE reference, EEF · related
- https://github.com/ash-project/ash/commit/66d81300065b970da0d2f4528354835d2418c7aeCVE reference, EEF · patch
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Incorrect Authorization
Incorrect Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.