CVE-2026-75575 (GCVE-0-2026-75575)
Vulnerability from cvelistv5 – Published: 2026-08-25 01:30 – Updated: 2026-08-29 11:47
VLAI
EPSS
VEX
Title
Rocket.Chat Missing DDP Rate Limit on the sendForgotPasswordEmail Meteor Method
Summary
Rocket.Chat exposes the sendForgotPasswordEmail Meteor method without a DDP rate limit, so an unauthenticated caller may invoke it as often as it likes. The method is reachable over DDP and over the HTTP route POST /api/v1/method.callAnon/sendForgotPasswordEmail, and it triggers a password reset message for any address that matches an account. With no DDPRateLimiter rule registered for it, a caller can drive an unbounded volume of reset mail at a chosen address from the deployment's own mail sender, and can probe addresses at scale: the method answers true for an address with no account and for a successful send, but false when the address belongs to an account that authenticates through an external provider and Accounts_AllowPasswordChangeForOAuthUsers is off, so repeated calls distinguish that class of account. Later versions register a rule permitting ten calls per minute per client address.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 15:25 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/RocketChat/Rocket.Chat/securit… | vendor-advisory |
| https://github.com/RocketChat/Rocket.Chat | product |
| https://github.com/RocketChat/Rocket.Chat/commit/… | patch |
| https://www.vulncheck.com/advisories/rocket-chat-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| RocketChat | Rocket.Chat |
Affected:
0 , < 7.10.15
(semver)
Affected: 8.0.0 , < 8.1.8 (semver) Affected: 8.2.0 , < 8.2.8 (semver) Affected: 8.3.0 , < 8.3.8 (semver) Affected: 8.4.0 , < 8.4.6 (semver) Affected: 8.5.0 , < 8.5.3 (semver) Affected: 8.6.0 , < 8.6.2 (semver) Affected: 8.7.0 , < 8.7.2 (semver) Affected: 8.8.0-rc.0 , < 8.8.0 (semver) cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:* cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:* cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:* cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:* cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:* cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:* cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:* cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:* cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:* |
Date Public
2026-08-20 00:00
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"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"versionEndExcluding": "8.5.3",
"versionStartIncluding": "8.5.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"versionEndExcluding": "8.6.2",
"versionStartIncluding": "8.6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"versionEndExcluding": "8.7.2",
"versionStartIncluding": "8.7.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"versionEndExcluding": "8.8.0",
"versionStartIncluding": "8.8.0-rc.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "nedlir"
}
],
"datePublic": "2026-08-20T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "Rocket.Chat exposes the sendForgotPasswordEmail Meteor method without a DDP rate limit, so an unauthenticated caller may invoke it as often as it likes. The method is reachable over DDP and over the HTTP route POST /api/v1/method.callAnon/sendForgotPasswordEmail, and it triggers a password reset message for any address that matches an account. With no DDPRateLimiter rule registered for it, a caller can drive an unbounded volume of reset mail at a chosen address from the deployment\u0027s own mail sender, and can probe addresses at scale: the method answers true for an address with no account and for a successful send, but false when the address belongs to an account that authenticates through an external provider and Accounts_AllowPasswordChangeForOAuthUsers is off, so repeated calls distinguish that class of account. Later versions register a rule permitting ten calls per minute per client address."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "NONE"
},
"format": "CVSS"
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-307",
"description": "Improper Restriction of Excessive Authentication Attempts",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-204",
"description": "Observable Response Discrepancy",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-29T11:47:47.758Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "GitHub Security Advisory (GHSA-7c6v-m68v-v73r)",
"tags": [
"vendor-advisory"
],
"url": "https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-7c6v-m68v-v73r"
},
{
"tags": [
"product"
],
"url": "https://github.com/RocketChat/Rocket.Chat"
},
{
"tags": [
"patch"
],
"url": "https://github.com/RocketChat/Rocket.Chat/commit/3a61c3afe"
},
{
"name": "VulnCheck Advisory: Rocket.Chat Missing DDP Rate Limit on the sendForgotPasswordEmail Meteor Method",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/rocket-chat-missing-ddp-rate-limit-on-the-sendforgotpasswordemail-meteor-method"
}
],
"title": "Rocket.Chat Missing DDP Rate Limit on the sendForgotPasswordEmail Meteor Method",
"x_generator": {
"engine": "vulncheck-endgame"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-75575",
"datePublished": "2026-08-25T01:30:29.898Z",
"dateReserved": "2026-08-17T22:02:27.998Z",
"dateUpdated": "2026-08-29T11:47:47.758Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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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