CVE-2026-57476 (GCVE-0-2026-57476)
Vulnerability from cvelistv5 – Published: 2026-07-10 17:10 – Updated: 2026-07-10 17:10 Exclusively Hosted Service
VLAI
EPSS
VEX
Title
Deloitte AI Assist for Customer unauthenticated RAG corpus read and write
Summary
Deloitte AI Assist for Customer exposed unauthenticated API endpoints that allowed an attacker with knowledge of additional parameters to read from or inject content into the retrieval-augmented generation (RAG) corpus. On 2026-03-25, AI Assist for Customer restricted network access and enforced authentication for the previously exposed endpoints.
Severity
4.8 (Medium)
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://zerotolerance.me/advisories/deloitte-aias… | third-party-advisory |
| https://zerotolerance.me/advisories/assets/VU4878… | third-party-advisory |
| https://raw.githubusercontent.com/cisagov/CSAF/de… | third-party-advisory |
| https://www.cve.org/CVERecord?id=CVE-2026-57474 | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Deloitte | AI Assist for Customer |
Affected:
0 , < 2026-03-25
(custom)
Unaffected: 2026-03-25 |
Date Public
2026-05-18 00:00
Credits
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "AI Assist for Customer",
"vendor": "Deloitte",
"versions": [
{
"lessThan": "2026-03-25",
"status": "affected",
"version": "0",
"versionType": "custom"
},
{
"status": "unaffected",
"version": "2026-03-25"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Karim El Labban, Zero Tolerance"
}
],
"datePublic": "2026-05-18T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "Deloitte AI Assist for Customer exposed unauthenticated API endpoints that allowed an attacker with knowledge of additional parameters to read from or inject content into the retrieval-augmented generation (RAG) corpus. On 2026-03-25, AI Assist for Customer restricted network access and enforced authentication for the previously exposed endpoints."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
}
},
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW"
}
},
{
"other": {
"content": {
"id": "CVE-2026-57476",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-23T18:31:21.217805Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-306",
"description": "CWE-306 Missing Authentication for Critical Function",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-10T17:10:50.682Z",
"orgId": "9119a7d8-5eab-497f-8521-727c672e3725",
"shortName": "cisa-cg"
},
"references": [
{
"name": "url",
"tags": [
"third-party-advisory"
],
"url": "https://zerotolerance.me/advisories/deloitte-aiassist-ascend-2026-vu487875/"
},
{
"name": "url",
"tags": [
"third-party-advisory"
],
"url": "https://zerotolerance.me/advisories/assets/VU487875-deloitte-ascend-advisory.pdf"
},
{
"name": "url",
"tags": [
"third-party-advisory"
],
"url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-191-01.json"
},
{
"name": "url",
"tags": [
"vdb-entry"
],
"url": "https://www.cve.org/CVERecord?id=CVE-2026-57474"
}
],
"tags": [
"exclusively-hosted-service"
],
"title": "Deloitte AI Assist for Customer unauthenticated RAG corpus read and write"
}
},
"cveMetadata": {
"assignerOrgId": "9119a7d8-5eab-497f-8521-727c672e3725",
"assignerShortName": "cisa-cg",
"cveId": "CVE-2026-57476",
"datePublished": "2026-07-10T17:10:50.682Z",
"dateReserved": "2026-06-24T13:52:15.600Z",
"dateUpdated": "2026-07-10T17:10:50.682Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-57476",
"date": "2026-07-11",
"epss": "0.00238",
"percentile": "0.14798"
},
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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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