FKIE_CVE-2026-40973
Vulnerability from fkie_nvd - Published: 2026-04-28 00:16 - Updated: 2026-07-24 21:10
Severity
Summary
A local attacker on the same host as the application may be able to take control of the directory used by `ApplicationTemp`. When `server.servlet.session.persistent` is set to `true` and the attack persists across application restarts, this may allow the attacker to read session information and hijack authenticated users or deploy a gadget chain and execute code as the application's user.
Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19), 2.7.0–2.7.32 (fix 2.7.33); predictable temp directory / `ApplicationTemp` ownership verification. Versions that are no longer supported are also affected per vendor advisory.
References
| URL | Tags | ||
|---|---|---|---|
| security@vmware.com | https://spring.io/security/cve-2026-40973 | Vendor Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| vmware | spring_boot | * | |
| vmware | spring_boot | * | |
| vmware | spring_boot | * | |
| vmware | spring_boot | * | |
| vmware | spring_boot | * |
{
"affected": [
{
"affectedData": [
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"defaultStatus": "unaffected",
"product": "Spring Boot",
"vendor": "Spring",
"versions": [
{
"lessThan": "4.0.6",
"status": "affected",
"version": "4.0.0",
"versionType": "custom"
},
{
"lessThan": "3.5.14",
"status": "affected",
"version": "3.5.0",
"versionType": "custom"
},
{
"lessThan": "3.4.16",
"status": "affected",
"version": "3.4.0",
"versionType": "custom"
},
{
"lessThan": "3.3.19",
"status": "affected",
"version": "3.3.0",
"versionType": "custom"
},
{
"lessThan": "2.7.33",
"status": "affected",
"version": "2.7.0",
"versionType": "custom"
}
]
}
],
"source": "security@vmware.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:*",
"matchCriteriaId": "5B1C9BD7-7555-4B3D-AED9-60C3C13DCF46",
"versionEndExcluding": "2.7.33",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:*",
"matchCriteriaId": "28EE6470-24FD-49D1-A2F0-7A19B290A161",
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},
{
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{
"criteria": "cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:*",
"matchCriteriaId": "D23096A1-8269-46C5-9215-9098E87D0A24",
"versionEndExcluding": "3.5.14",
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{
"criteria": "cpe:2.3:a:vmware:spring_boot:*:*:*:*:*:*:*:*",
"matchCriteriaId": "12A166C5-8B55-4BA3-AA8B-6024A257D441",
"versionEndExcluding": "4.0.6",
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}
],
"negate": false,
"operator": "OR"
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}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A local attacker on the same host as the application may be able to take control of the directory used by `ApplicationTemp`. When `server.servlet.session.persistent` is set to `true` and the attack persists across application restarts, this may allow the attacker to read session information and hijack authenticated users or deploy a gadget chain and execute code as the application\u0027s user.\n\nAffected: Spring Boot 4.0.0\u20134.0.5 (fix 4.0.6), 3.5.0\u20133.5.13 (fix 3.5.14), 3.4.0\u20133.4.15 (fix 3.4.16), 3.3.0\u20133.3.18 (fix 3.3.19), 2.7.0\u20132.7.32 (fix 2.7.33); predictable temp directory / `ApplicationTemp` ownership verification. Versions that are no longer supported are also affected per vendor advisory."
},
{
"lang": "es",
"value": "Un atacante local en el mismo host que la aplicaci\u00f3n podr\u00eda tomar el control del directorio utilizado por \u0027ApplicationTemp\u0027. Cuando \u0027server.servlet.session.persistent\u0027 se establece en \u0027true\u0027 y el ataque persiste a trav\u00e9s de los reinicios de la aplicaci\u00f3n, esto podr\u00eda permitir al atacante leer informaci\u00f3n de la sesi\u00f3n y secuestrar usuarios autenticados o desplegar una cadena de gadgets y ejecutar c\u00f3digo como el usuario de la aplicaci\u00f3n.\n\nAfectado: Spring Boot 4.0.0-4.0.5 (correcci\u00f3n 4.0.6), 3.5.0-3.5.13 (correcci\u00f3n 3.5.14), 3.4.0-3.4.15 (correcci\u00f3n 3.4.16), 3.3.0-3.3.18 (correcci\u00f3n 3.3.19), 2.7.0-2.7.32 (correcci\u00f3n 2.7.33); verificaci\u00f3n de propiedad de directorio temporal predecible / \u0027ApplicationTemp\u0027. Las versiones que ya no son compatibles tambi\u00e9n se ven afectadas seg\u00fan el aviso del proveedor."
}
],
"id": "CVE-2026-40973",
"lastModified": "2026-07-24T21:10:00.143",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.0,
"impactScore": 5.9,
"source": "security@vmware.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-40973",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-28T00:00:00+00:00",
"version": "2.0.3"
}
}
]
},
"published": "2026-04-28T00:16:24.357",
"references": [
{
"source": "security@vmware.com",
"tags": [
"Vendor Advisory"
],
"url": "https://spring.io/security/cve-2026-40973"
}
],
"sourceIdentifier": "security@vmware.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-377"
}
],
"source": "security@vmware.com",
"type": "Secondary"
}
]
}
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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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