CVE-2026-82681 (GCVE-0-2026-82681)

Vulnerability from cvelistv5 – Published: 2026-08-31 02:26 – Updated: 2026-08-31 16:01
VLAI
Title
Query-parameter injection in AshAdmin row-action links via unencoded string primary keys
Summary
Improper Encoding or Escaping of Output vulnerability in ash-project ash_admin lets an attacker who controls a record's string primary key rewrite the target of AshAdmin's row-action links. The Table, DataTable, and Show components built row-action URLs by raw string interpolation, splicing the primary key (and table, domain, and resource names) into the query string without URL-encoding. Ash resources routinely use user-settable string primary keys (slugs, emails). Because Plug.Conn.Query resolves duplicate parameters last-wins and primary_key is interpolated last, a stored key such as foo&action_type=destroy injects parameters that override the link, so an admin clicking edit is sent to a destroy form or an arbitrary resource; a # truncates the query into a fragment. The fix builds every link with URI.encode_query/1, encoding all interpolated values. This issue affects ash_admin: from 0.3.0-rc.0 before 1.3.1.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 16:01 UTC
CWE
  • CWE-116 - Improper Encoding or Escaping of Output
Assigner
Impacted products
Vendor Product Version CPE status
ash-project ash_admin Affected: 0.3.0-rc.0 , < 1.3.1 (semver)
    cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*
Create a notification for this product.
ash-project ash_admin Affected: b214535f0cc012e36ca621e643bf8f7b133ba354 , < 8e8ef91e8ba07498053887c6212f8b0f08178df6 (git)
    cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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              "repo": "https://github.com/ash-project/ash_admin",
              "vendor": "ash-project",
              "versions": [
                {
                  "lessThan": "8e8ef91e8ba07498053887c6212f8b0f08178df6",
                  "status": "affected",
                  "version": "b214535f0cc012e36ca621e643bf8f7b133ba354",
                  "versionType": "git"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "1.3.1",
                      "versionStartIncluding": "0.3.0-rc.0",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ],
              "operator": "AND"
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "value": "Peter Ullrich"
            },
            {
              "lang": "en",
              "type": "reporter",
              "value": "Peter Ullrich"
            },
            {
              "lang": "en",
              "type": "remediation developer",
              "value": "Zach Daniel / Ash Project"
            },
            {
              "lang": "en",
              "type": "coordinator",
              "value": "Jonatan M\u00e4nnchen / EEF"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003cp\u003eImproper Encoding or Escaping of Output vulnerability in ash-project ash_admin lets an attacker who controls a record\u0027s string primary key rewrite the target of AshAdmin\u0027s row-action links.\u003c/p\u003e\n\u003cp\u003eThe \u003ccode\u003eTable\u003c/code\u003e, \u003ccode\u003eDataTable\u003c/code\u003e, and \u003ccode\u003eShow\u003c/code\u003e components built row-action URLs by raw string interpolation, splicing the primary key (and table, domain, and resource names) into the query string without URL-encoding. Ash resources routinely use user-settable string primary keys (slugs, emails). Because \u003ccode\u003ePlug.Conn.Query\u003c/code\u003e resolves duplicate parameters last-wins and \u003ccode\u003eprimary_key\u003c/code\u003e is interpolated last, a stored key such as \u003ccode\u003efoo\u0026amp;action_type=destroy\u003c/code\u003e injects parameters that override the link, so an admin clicking \u003ccode\u003eedit\u003c/code\u003e is sent to a destroy form or an arbitrary resource; a \u003ccode\u003e#\u003c/code\u003e truncates the query into a fragment. The fix builds every link with \u003ccode\u003eURI.encode_query/1\u003c/code\u003e, encoding all interpolated values.\u003c/p\u003e\n\u003cp\u003eThis issue affects ash_admin: from 0.3.0-rc.0 before 1.3.1.\u003c/p\u003e"
                },
                {
                  "base64": false,
                  "type": "text/markdown",
                  "value": "Improper Encoding or Escaping of Output vulnerability in ash-project ash_admin lets an attacker who controls a record\u0027s string primary key rewrite the target of AshAdmin\u0027s row-action links.\n\nThe `Table`, `DataTable`, and `Show` components built row-action URLs by raw string interpolation, splicing the primary key (and table, domain, and resource names) into the query string without URL-encoding. Ash resources routinely use user-settable string primary keys (slugs, emails). Because `Plug.Conn.Query` resolves duplicate parameters last-wins and `primary_key` is interpolated last, a stored key such as `foo\u0026action_type=destroy` injects parameters that override the link, so an admin clicking `edit` is sent to a destroy form or an arbitrary resource; a `#` truncates the query into a fragment. The fix builds every link with `URI.encode_query/1`, encoding all interpolated values.\n\nThis issue affects ash_admin: from 0.3.0-rc.0 before 1.3.1."
                }
              ],
              "value": "Improper Encoding or Escaping of Output vulnerability in ash-project ash_admin lets an attacker who controls a record\u0027s string primary key rewrite the target of AshAdmin\u0027s row-action links.\n\nThe Table, DataTable, and Show components built row-action URLs by raw string interpolation, splicing the primary key (and table, domain, and resource names) into the query string without URL-encoding. Ash resources routinely use user-settable string primary keys (slugs, emails). Because Plug.Conn.Query resolves duplicate parameters last-wins and primary_key is interpolated last, a stored key such as foo\u0026action_type=destroy injects parameters that override the link, so an admin clicking edit is sent to a destroy form or an arbitrary resource; a # truncates the query into a fragment. The fix builds every link with URI.encode_query/1, encoding all interpolated values.\n\nThis issue affects ash_admin: from 0.3.0-rc.0 before 1.3.1."
            }
          ],
          "impacts": [
            {
              "capecId": "CAPEC-460",
              "descriptions": [
                {
                  "lang": "en",
                  "value": "CAPEC-460 HTTP Parameter Pollution (HPP)"
                }
              ]
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "PRESENT",
                "attackVector": "NETWORK",
                "baseScore": 2,
                "baseSeverity": "LOW",
                "privilegesRequired": "LOW",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "ACTIVE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
                "version": "4.0",
                "vulnAvailabilityImpact": "NONE",
                "vulnConfidentialityImpact": "NONE",
                "vulnIntegrityImpact": "LOW",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-116",
                  "description": "CWE-116 Improper Encoding or Escaping of Output",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-31T02:26:05.357Z",
            "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
            "shortName": "EEF"
          },
          "references": [
            {
              "tags": [
                "vendor-advisory",
                "related"
              ],
              "url": "https://github.com/ash-project/ash_admin/security/advisories/GHSA-j89q-xjrh-c26p"
            },
            {
              "tags": [
                "related"
              ],
              "url": "https://cna.erlef.org/cves/CVE-2026-82681.html"
            },
            {
              "tags": [
                "related"
              ],
              "url": "https://osv.dev/vulnerability/EEF-CVE-2026-82681"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/ash-project/ash_admin/commit/8e8ef91e8ba07498053887c6212f8b0f08178df6"
            }
          ],
          "source": {
            "discovery": "EXTERNAL"
          },
          "title": "Query-parameter injection in AshAdmin row-action links via unencoded string primary keys"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "assignerShortName": "EEF",
        "cveId": "CVE-2026-82681",
        "datePublished": "2026-08-31T02:26:05.357Z",
        "dateReserved": "2026-08-30T23:15:02.375Z",
        "dateUpdated": "2026-08-31T16:01:32.019Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.

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Detection rules are retrieved from Rulezet.

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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.


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