CVE-2026-81892 (GCVE-0-2026-81892)
Vulnerability from cvelistv5 – Published: 2026-08-31 20:38 – Updated: 2026-08-31 20:38
VLAI
EPSS
VEX
Title
EasyAdmin custom-action dispatcher bypasses access_control on other routes
Summary
EasyAdmin is a fast and modern admin generator for Symfony applications. From 4.0.0 until 4.29.16 and 5.5.1, EasyAdmin serves all backend requests through a single dashboard route and, for custom actions (Action::linkToRoute() and MenuItem::linkToRoute()), swaps the executed controller based on the routeName query parameter on the kernel.controller event. The swap happens after Symfony's security firewall has already evaluated access_control against the original dashboard URL, and the routeName value was not validated. As a result, a path-based access_control rule protecting the target route was never evaluated, so a low-privilege backend user who can reach a single EasyAdmin URL and knows a target route's name can execute that route's controller, bypassing the path-based rule. Only path-based protections are bypassed. Routes whose controller enforces its own authorization with #[IsGranted] or denyAccessUnlessGranted() remain protected because those checks are recomputed against the swapped-in controller. This issue is fixed in versions 4.29.16 and 5.5.1.
Severity
8.1 (High)
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/EasyCorp/EasyAdminBundle/secur… | x_refsource_CONFIRM |
| https://github.com/EasyCorp/EasyAdminBundle/commi… | x_refsource_MISC |
| https://github.com/EasyCorp/EasyAdminBundle/commi… | x_refsource_MISC |
| https://github.com/EasyCorp/EasyAdminBundle/relea… | x_refsource_MISC |
| https://github.com/EasyCorp/EasyAdminBundle/relea… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| EasyCorp | EasyAdminBundle |
Affected:
>= 4.0.0, < 4.29.16
Affected: >= 5.0.0, < 5.5.1 |
guessed |
{
"containers": {
"cna": {
"affected": [
{
"product": "EasyAdminBundle",
"vendor": "EasyCorp",
"versions": [
{
"status": "affected",
"version": "\u003e= 4.0.0, \u003c 4.29.16"
},
{
"status": "affected",
"version": "\u003e= 5.0.0, \u003c 5.5.1"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "EasyAdmin is a fast and modern admin generator for Symfony applications. From 4.0.0 until 4.29.16 and 5.5.1, EasyAdmin serves all backend requests through a single dashboard route and, for custom actions (Action::linkToRoute() and MenuItem::linkToRoute()), swaps the executed controller based on the routeName query parameter on the kernel.controller event. The swap happens after Symfony\u0027s security firewall has already evaluated access_control against the original dashboard URL, and the routeName value was not validated. As a result, a path-based access_control rule protecting the target route was never evaluated, so a low-privilege backend user who can reach a single EasyAdmin URL and knows a target route\u0027s name can execute that route\u0027s controller, bypassing the path-based rule. Only path-based protections are bypassed. Routes whose controller enforces its own authorization with #[IsGranted] or denyAccessUnlessGranted() remain protected because those checks are recomputed against the swapped-in controller. This issue is fixed in versions 4.29.16 and 5.5.1."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-639",
"description": "CWE-639: Authorization Bypass Through User-Controlled Key",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-862",
"description": "CWE-862: Missing Authorization",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-863",
"description": "CWE-863: Incorrect Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-31T20:38:06.196Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/EasyCorp/EasyAdminBundle/security/advisories/GHSA-g2fm-8hr4-j82h",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/EasyCorp/EasyAdminBundle/security/advisories/GHSA-g2fm-8hr4-j82h"
},
{
"name": "https://github.com/EasyCorp/EasyAdminBundle/commit/03be45c6b7213c4c984a1d0542b7ec60359329f8",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/EasyCorp/EasyAdminBundle/commit/03be45c6b7213c4c984a1d0542b7ec60359329f8"
},
{
"name": "https://github.com/EasyCorp/EasyAdminBundle/commit/6228dfef598d81eeb0baa35625e50812f3c77699",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/EasyCorp/EasyAdminBundle/commit/6228dfef598d81eeb0baa35625e50812f3c77699"
},
{
"name": "https://github.com/EasyCorp/EasyAdminBundle/releases/tag/v4.29.16",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/EasyCorp/EasyAdminBundle/releases/tag/v4.29.16"
},
{
"name": "https://github.com/EasyCorp/EasyAdminBundle/releases/tag/v5.5.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/EasyCorp/EasyAdminBundle/releases/tag/v5.5.1"
}
],
"source": {
"advisory": "GHSA-g2fm-8hr4-j82h",
"discovery": "UNKNOWN"
},
"title": "EasyAdmin custom-action dispatcher bypasses access_control on other routes"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-81892",
"datePublished": "2026-08-31T20:38:06.196Z",
"dateReserved": "2026-08-27T17:48:42.123Z",
"dateUpdated": "2026-08-31T20:38:06.196Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-81892",
"date": "2026-09-01",
"epss": "0.0025",
"percentile": "0.16239"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-81892\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-08-31T21:17:52.927\",\"lastModified\":\"2026-08-31T21:17:52.927\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"EasyAdmin is a fast and modern admin generator for Symfony applications. From 4.0.0 until 4.29.16 and 5.5.1, EasyAdmin serves all backend requests through a single dashboard route and, for custom actions (Action::linkToRoute() and MenuItem::linkToRoute()), swaps the executed controller based on the routeName query parameter on the kernel.controller event. The swap happens after Symfony\u0027s security firewall has already evaluated access_control against the original dashboard URL, and the routeName value was not validated. As a result, a path-based access_control rule protecting the target route was never evaluated, so a low-privilege backend user who can reach a single EasyAdmin URL and knows a target route\u0027s name can execute that route\u0027s controller, bypassing the path-based rule. Only path-based protections are bypassed. Routes whose controller enforces its own authorization with #[IsGranted] or denyAccessUnlessGranted() remain protected because those checks are recomputed against the swapped-in controller. This issue is fixed in versions 4.29.16 and 5.5.1.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"EasyCorp\",\"product\":\"EasyAdminBundle\",\"versions\":[{\"version\":\"\u003e= 4.0.0, \u003c 4.29.16\",\"status\":\"affected\"},{\"version\":\"\u003e= 5.0.0, \u003c 5.5.1\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N\",\"baseScore\":8.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-639\"},{\"lang\":\"en\",\"value\":\"CWE-862\"},{\"lang\":\"en\",\"value\":\"CWE-863\"}]}],\"references\":[{\"url\":\"https://github.com/EasyCorp/EasyAdminBundle/commit/03be45c6b7213c4c984a1d0542b7ec60359329f8\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/EasyCorp/EasyAdminBundle/commit/6228dfef598d81eeb0baa35625e50812f3c77699\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/EasyCorp/EasyAdminBundle/releases/tag/v4.29.16\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/EasyCorp/EasyAdminBundle/releases/tag/v5.5.1\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/EasyCorp/EasyAdminBundle/security/advisories/GHSA-g2fm-8hr4-j82h\",\"source\":\"security-advisories@github.com\"}]}}"
}
}
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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.
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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.
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.
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