FKIE_CVE-2026-58066
Vulnerability from fkie_nvd - Published: 2026-07-30 06:25 - Updated: 2026-08-25 18:12
Severity
Summary
Rocket.Chat's SAML SSO before versions 8.7.0, 8.6.1, 8.5.2, 8.4.5, 8.3.7, 8.2.7, 8.1.7, 8.0.8, and 7.10.14 verified XML signatures but did not bind the validated signature to samlp:Response / saml:Assertion. An attacker could submit a wrapped document carrying forged identity attributes alongside any valid signature made by the trusted IdP certificate, and log in as an arbitrary user.
References
| URL | Tags | ||
|---|---|---|---|
| support@hackerone.com | https://github.com/RocketChat/Rocket.Chat/pull/41233 | Issue Tracking | |
| support@hackerone.com | https://hackerone.com/reports/3827674 | Third Party Advisory, Issue Tracking |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| rocket.chat | rocket.chat | * | |
| rocket.chat | rocket.chat | * | |
| rocket.chat | rocket.chat | * | |
| rocket.chat | rocket.chat | * | |
| rocket.chat | rocket.chat | * | |
| rocket.chat | rocket.chat | * | |
| rocket.chat | rocket.chat | * | |
| rocket.chat | rocket.chat | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Rocket.Chat",
"vendor": "Rocket.Chat",
"versions": [
{
"lessThan": "8.7.0",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "8.6.1",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "8.5.2",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "8.4.5",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "8.3.7",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "8.2.7",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "8.1.7",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "8.0.8",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "7.10.14",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"source": "support@hackerone.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"matchCriteriaId": "DA5E3F8A-FBAB-4EC1-9961-095750C5D2DA",
"versionEndExcluding": "7.10.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4F68FB9C-D103-40EB-B14E-3B0C6F8202A9",
"versionEndExcluding": "8.0.8",
"versionStartIncluding": "8.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"matchCriteriaId": "3BB60B40-B2D4-4C4A-B3F5-1F99A7C4BCF5",
"versionEndExcluding": "8.1.7",
"versionStartIncluding": "8.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"matchCriteriaId": "1B8E3FAD-C7BB-4E00-8DC2-20CC56197B6E",
"versionEndExcluding": "8.2.7",
"versionStartIncluding": "8.2.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"matchCriteriaId": "08D85ED2-77BC-400D-8CBF-851531AC88EA",
"versionEndExcluding": "8.3.7",
"versionStartIncluding": "8.3.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4E136563-0EA5-4145-A2FB-71C85F6705A3",
"versionEndExcluding": "8.4.5",
"versionStartIncluding": "8.4.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"matchCriteriaId": "D009BEF8-7BDA-4A45-A7EC-B20A745A1945",
"versionEndExcluding": "8.5.2",
"versionStartIncluding": "8.5.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"matchCriteriaId": "434D764C-1E9D-476C-8A48-C88F12DB9192",
"versionEndExcluding": "8.6.1",
"versionStartIncluding": "8.6.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Rocket.Chat\u0027s SAML SSO before versions 8.7.0, 8.6.1, 8.5.2, 8.4.5, 8.3.7, 8.2.7, 8.1.7, 8.0.8, and 7.10.14 verified XML signatures but did not bind the validated signature to samlp:Response / saml:Assertion. An attacker could submit a wrapped document carrying forged identity attributes alongside any valid signature made by the trusted IdP certificate, and log in as an arbitrary user."
}
],
"id": "CVE-2026-58066",
"lastModified": "2026-08-25T18:12:04.197",
"metrics": {
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "support@hackerone.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-58066",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-30T00:00:00+00:00",
"version": "2.0.3"
}
}
]
},
"published": "2026-07-30T06:25:55.540",
"references": [
{
"source": "support@hackerone.com",
"tags": [
"Issue Tracking"
],
"url": "https://github.com/RocketChat/Rocket.Chat/pull/41233"
},
{
"source": "support@hackerone.com",
"tags": [
"Third Party Advisory",
"Issue Tracking"
],
"url": "https://hackerone.com/reports/3827674"
}
],
"sourceIdentifier": "support@hackerone.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-287"
}
],
"source": "support@hackerone.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.
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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