CVE-2026-45794 (GCVE-0-2026-45794)
Vulnerability from cvelistv5 – Published: 2026-09-15 09:49 – Updated: 2026-09-15 09:49
VLAI
EPSS
VEX
Title
OpenAM Unsafe Java Deserialization via SNS
Summary
Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, the anonymous Push Notification SNS callback handled by SnsMessageResource falls back to a CTS predicate blob after a messageId expires from the in-memory dispatcher, treats top-level blob keys as Java class names for Class.forName, and deserializes attacker-controlled JSON through Jackson. A low-privileged user who starts Push Registration and obtains the messageId, shared secret, and challenge can wait for expiry, replace the persistent blob through anonymous callbacks, and trigger class loading and construction in the OpenAM JVM. The primitive can cause classpath-dependent process execution, file writes, or denial of service, although command execution was not confirmed on the tested stock classpath. This issue is fixed in version 16.1.1.
Severity
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/OpenIdentityPlatform/OpenAM/se… | x_refsource_CONFIRM |
| https://github.com/OpenIdentityPlatform/OpenAM/co… | x_refsource_MISC |
| https://github.com/OpenIdentityPlatform/OpenAM/re… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| OpenIdentityPlatform | OpenAM |
Affected:
< 16.1.1
|
guessed |
{
"containers": {
"cna": {
"affected": [
{
"product": "OpenAM",
"vendor": "OpenIdentityPlatform",
"versions": [
{
"status": "affected",
"version": "\u003c 16.1.1"
}
]
}
],
"descriptions": [
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"lang": "en",
"value": "Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, the anonymous Push Notification SNS callback handled by SnsMessageResource falls back to a CTS predicate blob after a messageId expires from the in-memory dispatcher, treats top-level blob keys as Java class names for Class.forName, and deserializes attacker-controlled JSON through Jackson. A low-privileged user who starts Push Registration and obtains the messageId, shared secret, and challenge can wait for expiry, replace the persistent blob through anonymous callbacks, and trigger class loading and construction in the OpenAM JVM. The primitive can cause classpath-dependent process execution, file writes, or denial of service, although command execution was not confirmed on the tested stock classpath. This issue is fixed in version 16.1.1."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "HIGH",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"privilegesRequired": "LOW",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-502",
"description": "CWE-502: Deserialization of Untrusted Data",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-15T09:49:34.730Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-pp89-732f-3g8q",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-pp89-732f-3g8q"
},
{
"name": "https://github.com/OpenIdentityPlatform/OpenAM/commit/ca15cba9210f17c0f839b1c148964e1a3dc4a8ca",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/OpenIdentityPlatform/OpenAM/commit/ca15cba9210f17c0f839b1c148964e1a3dc4a8ca"
},
{
"name": "https://github.com/OpenIdentityPlatform/OpenAM/releases/tag/16.1.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/OpenIdentityPlatform/OpenAM/releases/tag/16.1.1"
}
],
"source": {
"advisory": "GHSA-pp89-732f-3g8q",
"discovery": "UNKNOWN"
},
"title": "OpenAM Unsafe Java Deserialization via SNS"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-45794",
"datePublished": "2026-09-15T09:49:34.730Z",
"dateReserved": "2026-05-13T08:19:32.603Z",
"dateUpdated": "2026-09-15T09:49:34.730Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-45794",
"date": "2026-09-15",
"epss": "0.00627",
"percentile": "0.48248"
},
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}
}
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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.
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.
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