Vulnerability-Lookup

CVE-2025-48043 (GCVE-0-2025-48043)

Vulnerability from cvelistv5 – Published: 2025-10-10 15:57 – Updated: 2026-07-24 14:14

Title

Bypass and runtime policies that can never pass may be incorrectly applied in filter authorization

Summary

Incorrect Authorization vulnerability in ash-project ash allows Authentication Bypass. This vulnerability is associated with program files lib/ash/policy/authorizer/authorizer.ex and program routines 'Elixir.Ash.Policy.Authorizer':strict_filters/2. This issue affects ash: from 0.1.0 before 3.6.2.

Severity

8.6 (High)


                        
                          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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-10 16:33 UTC

CWE

CWE-863 - Incorrect Authorization

Assigner

EEF mitre root

References

4 references

URL	Tags
https://github.com/ash-project/ash/security/advis…	vendor-advisoryrelated
https://cna.erlef.org/cves/CVE-2025-48043.html	related
https://osv.dev/vulnerability/EEF-CVE-2025-48043	related
https://github.com/ash-project/ash/commit/66d8130…	patch

Impacted products

2 products

Vendor	Product	Version	CPE status
ash-project	ash	Affected: 0.1.0 , < 3.6.2 (semver) cpe:2.3:a:ash-project:ash::::::::
ash-project	ash	Affected: 4c41344126b0aba09ec3085517000f8aefec299e , < 66d81300065b970da0d2f4528354835d2418c7ae (git) cpe:2.3:a:ash-project:ash::::::::

Credits

Zach Daniel Jonatan Männchen / EEF Jonatan Männchen / EEF

Show details on NVD website

JSON

To clipboard

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            "dateUpdated": "2026-07-24T14:14:08.323Z",
            "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
            "shortName": "EEF"
          },
          "references": [
            {
              "tags": [
                "vendor-advisory",
                "related"
              ],
              "url": "https://github.com/ash-project/ash/security/advisories/GHSA-7r7f-9xpj-jmr7"
            },
            {
              "tags": [
                "related"
              ],
              "url": "https://cna.erlef.org/cves/CVE-2025-48043.html"
            },
            {
              "tags": [
                "related"
              ],
              "url": "https://osv.dev/vulnerability/EEF-CVE-2025-48043"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/ash-project/ash/commit/66d81300065b970da0d2f4528354835d2418c7ae"
            }
          ],
          "source": {
            "discovery": "INTERNAL"
          },
          "title": "Bypass and runtime policies that can never pass may be incorrectly applied in filter authorization",
          "x_generator": {
            "engine": "Vulnogram 0.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "assignerShortName": "EEF",
        "cveId": "CVE-2025-48043",
        "datePublished": "2025-10-10T15:57:29.225Z",
        "dateReserved": "2025-05-15T08:40:25.455Z",
        "dateUpdated": "2026-07-24T14:14:08.323Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2025-48043

Vulnerability from fkie_nvd - Published: 2025-10-10 16:15 - Updated: 2026-07-24 15:17

Severity

8.6 (High) - 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

Summary

References

	URL	Tags
	6b3ad84c-e1a6-4bf7-a703-f496b71e49db	https://cna.erlef.org/cves/CVE-2025-48043.html
	6b3ad84c-e1a6-4bf7-a703-f496b71e49db	https://github.com/ash-project/ash/commit/66d81300065b970da0d2f4528354835d2418c7ae
	6b3ad84c-e1a6-4bf7-a703-f496b71e49db	https://github.com/ash-project/ash/security/advisories/GHSA-7r7f-9xpj-jmr7
	6b3ad84c-e1a6-4bf7-a703-f496b71e49db	https://osv.dev/vulnerability/EEF-CVE-2025-48043

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://repo.hex.pm",
          "cpes": [
            "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "packageName": "ash",
          "packageURL": "pkg:hex/ash",
          "product": "ash",
          "programFiles": [
            "lib/ash/policy/authorizer/authorizer.ex"
          ],
          "programRoutines": [
            {
              "name": "\u0027Elixir.Ash.Policy.Authorizer\u0027:strict_filters/2"
            }
          ],
          "repo": "https://github.com/ash-project/ash",
          "vendor": "ash-project",
          "versions": [
            {
              "lessThan": "3.6.2",
              "status": "affected",
              "version": "0.1.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://github.com",
          "cpes": [
            "cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "packageName": "ash-project/ash",
          "packageURL": "pkg:github/ash-project/ash",
          "product": "ash",
          "programFiles": [
            "lib/ash/policy/authorizer/authorizer.ex"
          ],
          "programRoutines": [
            {
              "name": "\u0027Elixir.Ash.Policy.Authorizer\u0027:strict_filters/2"
            }
          ],
          "repo": "https://github.com/ash-project/ash",
          "vendor": "ash-project",
          "versions": [
            {
              "lessThan": "66d81300065b970da0d2f4528354835d2418c7ae",
              "status": "affected",
              "version": "4c41344126b0aba09ec3085517000f8aefec299e",
              "versionType": "git"
            }
          ]
        }
      ],
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Incorrect Authorization vulnerability in ash-project ash allows Authentication Bypass. This vulnerability is associated with program files lib/ash/policy/authorizer/authorizer.ex and program routines \u0027Elixir.Ash.Policy.Authorizer\u0027:strict_filters/2.\n\nThis issue affects ash: from 0.1.0 before 3.6.2."
    }
  ],
  "id": "CVE-2025-48043",
  "lastModified": "2026-07-24T15:17:07.073",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-48043",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-10-10T16:33:21.270063Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-10-10T16:15:52.083",
  "references": [
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "url": "https://cna.erlef.org/cves/CVE-2025-48043.html"
    },
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "url": "https://github.com/ash-project/ash/commit/66d81300065b970da0d2f4528354835d2418c7ae"
    },
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "url": "https://github.com/ash-project/ash/security/advisories/GHSA-7r7f-9xpj-jmr7"
    },
    {
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2025-48043"
    }
  ],
  "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
      "type": "Secondary"
    }
  ]
}

GHSA-7R7F-9XPJ-JMR7

Vulnerability from github – Published: 2025-10-13 13:33 – Updated: 2026-04-06 23:15

Summary

Ash Framework: Filter authorization misapplies impossible bypass/runtime policies

Details

Summary

When using filter authorization, two edge cases could cause the policy compiler/authorizer to generate a permissive filter:

Bypass policies whose condition can never pass at runtime were compiled as OR(AND(condition, compiled_policies), NOT(condition)). If the condition could never be true at runtime, the NOT(condition) branch evaluated truthy and the overall expression became permissive.
Runtime policy scenarios that reduce to “no checks are applicable” (an empty SAT scenario) were treated as an empty clause and dropped instead of being treated as false, which could again produce an overly broad (permissive) filter.

These bugs could allow reads to return records that should have been excluded by policy.

Impact

Projects that rely on filter-based authorization and define:

bypass ... do ... end blocks whose condition(s) are only resolvable at runtime and can never pass in a given request context, or
runtime checks that simplify to an empty scenario for a clause

may unintentionally generate a permissive query filter, potentially returning unauthorized data.

Actions primarily affected: reads guarded by filter policies. Non-filter (e.g., hard forbid) policies are not impacted.

Technical details

This patch corrects two behaviors:

Ash.Policy.Policy.compile_policy_expression/1 now treats bypass blocks as AND(condition_expression, compiled_policies) instead of OR(AND(...), NOT(condition_expression)). This removes the permissive NOT(condition) escape hatch when a bypass condition never passes.
Ash.Policy.Authorizer now treats empty SAT scenarios (scenario == %{}) as false, ensuring impossible scenarios do not collapse into a no-op and inadvertently widen the filter. The reducer also normalizes nil → false consistently when building auto_filter fragments.

Relevant changes are in:

lib/ash/policy/policy.ex (bypass compilation)
lib/ash/policy/authorizer/authorizer.ex (scenario handling / auto_filter normalization)
Tests added: test/policy/filter_condition_test.exs (RuntimeFalsyCheck, RuntimeBypassResource) validate the corrected behavior.

Workarounds

Avoid bypass policies whose conditions are only decidable at runtime and may be perpetually false in some contexts; prefer explicit authorize_if/forbid_if blocks without bypass for those cases.
Add an explicit final forbid_if always() guard for sensitive reads as a belt-and-suspenders fallback until user can upgrade.
Where feasible, replace runtime-unknown checks with strict/compile-time checks or restructure to avoid empty SAT scenarios.

How to tell if user is affected

User is likely affected if ALL of the following are true:

Uses filter authorization; and
Defines bypass block with access_type :runtime without any policies after it; or
Defines bypass blocks whose conditions are evaluated at runtime (e.g., checks with strict_check/3 returning :unknown and a runtime check/4 that may never succeed in some contexts) without any policies after it

A quick sanity test is to issue a read expected to return no rows under such a bypass or runtime-falsy condition and verify it indeed returns []. The included test bypass works with filter policies demonstrates the corrected, non-permissive behavior.

Severity

8.6 (High)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Hex",
        "name": "ash"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-48043"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-10-13T13:33:22Z",
    "nvd_published_at": "2025-10-10T16:15:52Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n\nWhen using **filter** authorization, two edge cases could cause the policy compiler/authorizer to generate a permissive filter:\n\n1. **Bypass policies whose condition can never pass at runtime** were compiled as\n   `OR(AND(condition, compiled_policies), NOT(condition))`.\n   If the condition could never be true at runtime, the `NOT(condition)` branch evaluated truthy and the overall expression became permissive.\n\n2. **Runtime policy scenarios that reduce to \u201cno checks are applicable\u201d** (an empty SAT scenario) were treated as an empty clause and dropped instead of being treated as **`false`**, which could again produce an overly broad (permissive) filter.\n\nThese bugs could allow reads to return records that should have been excluded by policy.\n\n### Impact\n\nProjects that rely on **filter-based authorization** and define:\n\n* `bypass ... do ... end` blocks whose condition(s) are only resolvable at runtime and can never pass in a given request context, **or**\n* runtime checks that simplify to an **empty** scenario for a clause\n\nmay unintentionally generate a permissive query filter, potentially returning unauthorized data.\n\n*Actions primarily affected:* reads guarded by filter policies. Non-filter (e.g., hard forbid) policies are not impacted.\n\n### Technical details\n\nThis patch corrects two behaviors:\n\n* **`Ash.Policy.Policy.compile_policy_expression/1`** now treats **bypass** blocks as\n  `AND(condition_expression, compiled_policies)`\n  instead of `OR(AND(...), NOT(condition_expression))`. This removes the permissive `NOT(condition)` escape hatch when a bypass condition never passes.\n\n* **`Ash.Policy.Authorizer`** now treats **empty SAT scenarios** (`scenario == %{}`) as **`false`**, ensuring impossible scenarios do not collapse into a no-op and inadvertently widen the filter. The reducer also normalizes `nil` \u2192 `false` consistently when building `auto_filter` fragments.\n\nRelevant changes are in:\n\n* `lib/ash/policy/policy.ex` (bypass compilation)\n* `lib/ash/policy/authorizer/authorizer.ex` (scenario handling / auto_filter normalization)\n* Tests added: `test/policy/filter_condition_test.exs` (`RuntimeFalsyCheck`, `RuntimeBypassResource`) validate the corrected behavior.\n\n### Workarounds\n\n* Avoid `bypass` policies whose conditions are only decidable at runtime and may be perpetually false in some contexts; prefer explicit `authorize_if`/`forbid_if` blocks without `bypass` for those cases.\n* Add an explicit **final `forbid_if always()`** guard for sensitive reads as a belt-and-suspenders fallback until user can upgrade.\n* Where feasible, replace runtime-unknown checks with strict/compile-time checks or restructure to avoid empty SAT scenarios.\n\n### How to tell if user is affected\n\nUser is likely affected if ALL of the following are true:\n\n*  Uses **filter authorization**; and\n* Defines `bypass` block with `access_type :runtime` without any policies after it; or\n* Defines `bypass` blocks whose conditions are evaluated at runtime (e.g., checks with `strict_check/3` returning `:unknown` and a runtime `check/4` that may never succeed in some contexts) without any policies after it\n\nA quick sanity test is to issue a read expected to return **no** rows under such a bypass or runtime-falsy condition and verify it indeed returns `[]`. The included test `bypass works with filter policies` demonstrates the corrected, non-permissive behavior.",
  "id": "GHSA-7r7f-9xpj-jmr7",
  "modified": "2026-04-06T23:15:07Z",
  "published": "2025-10-13T13:33:22Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ash-project/ash/security/advisories/GHSA-7r7f-9xpj-jmr7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-48043"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ash-project/ash/commit/66d81300065b970da0d2f4528354835d2418c7ae"
    },
    {
      "type": "WEB",
      "url": "https://cna.erlef.org/cves/CVE-2025-48043.html"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ash-project/ash"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ash-project/ash/releases/tag/v3.6.2"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/EEF-CVE-2025-48043"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Ash Framework: Filter authorization misapplies impossible bypass/runtime policies"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2025-48043 (GCVE-0-2025-48043)

FKIE_CVE-2025-48043

GHSA-7R7F-9XPJ-JMR7

Summary

Impact

Technical details

Workarounds

How to tell if user is affected

Tags

Sightings

Nomenclature

Related by attack behaviour