CVE-2026-82681 (GCVE-0-2026-82681)
Vulnerability from cvelistv5 – Published: 2026-08-31 02:26 – Updated: 2026-08-31 16:01
VLAI
EPSS
VEX
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.
Severity
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
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ash-project/ash_admin/security… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-82681.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-82681 | related |
| https://github.com/ash-project/ash_admin/commit/8… | patch |
Impacted products
2 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:*:*:*:*:*:*:*:* |
||
| ash-project | ash_admin |
Affected:
b214535f0cc012e36ca621e643bf8f7b133ba354 , < 8e8ef91e8ba07498053887c6212f8b0f08178df6
(git)
cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:* |
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"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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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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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.
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.
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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.