CVE-2024-38518 (GCVE-0-2024-38518)
Vulnerability from cvelistv5 – Published: 2024-06-28 20:25 – Updated: 2024-08-02 04:12- CWE-284 - Improper Access Control
| URL | Tags |
|---|---|
| https://github.com/bigbluebutton/bigbluebutton/se… | x_refsource_CONFIRM |
| https://github.com/bigbluebutton/bigbluebutton/pu… | x_refsource_MISC |
| https://github.com/bigbluebutton/bigbluebutton/co… | x_refsource_MISC |
| https://github.com/bigbluebutton/bigbluebutton/co… | x_refsource_MISC |
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| bigbluebutton | bigbluebutton |
Affected:
< 2.6.18
Affected: >= 2.7.0, < 2.7.8 Affected: >= 2.8.0, < 3.0.0-alpha.7 |
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-38518",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-07-02T19:57:25.410885Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-07-03T15:44:56.030Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2024-08-02T04:12:25.127Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4m48-49h7-f3c4",
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4m48-49h7-f3c4"
},
{
"name": "https://github.com/bigbluebutton/bigbluebutton/pull/20279",
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/pull/20279"
},
{
"name": "https://github.com/bigbluebutton/bigbluebutton/commit/a9d436accdcd26ea66bed9f391488ac128cd62d1",
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/commit/a9d436accdcd26ea66bed9f391488ac128cd62d1"
},
{
"name": "https://github.com/bigbluebutton/bigbluebutton/commit/ea6e9461dceae8fa593543d8c686f77bb8677e72",
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/commit/ea6e9461dceae8fa593543d8c686f77bb8677e72"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "bigbluebutton",
"vendor": "bigbluebutton",
"versions": [
{
"status": "affected",
"version": "\u003c 2.6.18"
},
{
"status": "affected",
"version": "\u003e= 2.7.0, \u003c 2.7.8"
},
{
"status": "affected",
"version": "\u003e= 2.8.0, \u003c 3.0.0-alpha.7"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "BigBlueButton is an open-source virtual classroom designed to help teachers teach and learners learn. An attacker with a valid join link to a meeting can trick BigBlueButton into generating a signed join link with additional parameters. One of those parameters may be \"role=moderator\", allowing an attacker to join a meeting as moderator using a join link that was originally created for viewer access. This vulnerability has been patched in version(s) 2.6.18, 2.7.8 and 3.0.0-alpha.7."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 4.6,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-284",
"description": "CWE-284: Improper Access Control",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-06-28T20:25:40.743Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4m48-49h7-f3c4",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4m48-49h7-f3c4"
},
{
"name": "https://github.com/bigbluebutton/bigbluebutton/pull/20279",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/pull/20279"
},
{
"name": "https://github.com/bigbluebutton/bigbluebutton/commit/a9d436accdcd26ea66bed9f391488ac128cd62d1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/commit/a9d436accdcd26ea66bed9f391488ac128cd62d1"
},
{
"name": "https://github.com/bigbluebutton/bigbluebutton/commit/ea6e9461dceae8fa593543d8c686f77bb8677e72",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/commit/ea6e9461dceae8fa593543d8c686f77bb8677e72"
}
],
"source": {
"advisory": "GHSA-4m48-49h7-f3c4",
"discovery": "UNKNOWN"
},
"title": "bbb-web API additional parameters considered"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2024-38518",
"datePublished": "2024-06-28T20:25:40.743Z",
"dateReserved": "2024-06-18T16:37:02.727Z",
"dateUpdated": "2024-08-02T04:12:25.127Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2024-38518",
"date": "2026-11-07",
"epss": "0.00307",
"percentile": "0.23623"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"product": "bigbluebutton",
"vendor": "bigbluebutton",
"versions": [
{
"status": "affected",
"version": "\u003c 2.6.18"
},
{
"status": "affected",
"version": "\u003e= 2.7.0, \u003c 2.7.8"
},
{
"status": "affected",
"version": "\u003e= 2.8.0, \u003c 3.0.0-alpha.7"
}
]
}
],
"source": "security-advisories@github.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "BigBlueButton is an open-source virtual classroom designed to help teachers teach and learners learn. An attacker with a valid join link to a meeting can trick BigBlueButton into generating a signed join link with additional parameters. One of those parameters may be \"role=moderator\", allowing an attacker to join a meeting as moderator using a join link that was originally created for viewer access. This vulnerability has been patched in version(s) 2.6.18, 2.7.8 and 3.0.0-alpha.7."
},
{
"lang": "es",
"value": "BigBlueButton es un aula virtual de c\u00f3digo abierto dise\u00f1ada para ayudar a los profesores a ense\u00f1ar y a los alumnos a aprender. Un atacante con un enlace de entrada v\u00e1lido para una reuni\u00f3n puede enga\u00f1ar a BigBlueButton para que genere un enlace de entrada firmado con par\u00e1metros adicionales. Uno de esos par\u00e1metros puede ser \"rol=moderador\", lo que permite a un atacante unirse a una reuni\u00f3n como moderador utilizando un enlace para unirse que se cre\u00f3 originalmente para el acceso de los espectadores. Esta vulnerabilidad ha sido parcheada en las versiones 2.6.18, 2.7.8 y 3.0.0-alpha.7."
}
],
"id": "CVE-2024-38518",
"lastModified": "2026-06-17T07:40:27.477",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 4.6,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L",
"version": "3.1"
},
"exploitabilityScore": 2.1,
"impactScore": 2.5,
"source": "security-advisories@github.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-38518",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-07-02T19:57:25.410885Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-06-28T21:15:03.180",
"references": [
{
"source": "security-advisories@github.com",
"url": "https://github.com/bigbluebutton/bigbluebutton/commit/a9d436accdcd26ea66bed9f391488ac128cd62d1"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/bigbluebutton/bigbluebutton/commit/ea6e9461dceae8fa593543d8c686f77bb8677e72"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/bigbluebutton/bigbluebutton/pull/20279"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4m48-49h7-f3c4"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/bigbluebutton/bigbluebutton/commit/a9d436accdcd26ea66bed9f391488ac128cd62d1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/bigbluebutton/bigbluebutton/commit/ea6e9461dceae8fa593543d8c686f77bb8677e72"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/bigbluebutton/bigbluebutton/pull/20279"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4m48-49h7-f3c4"
}
],
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-284"
}
],
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2025-05-28T21:56:42+00:00",
"cve": "CVE-2024-38518",
"id": "CVE-2024-38518",
"initial_release_date": "2024-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "bbb-web API additional parameters considered",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-38518.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T04:12:25.127Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"name": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4m48-49h7-f3c4",
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4m48-49h7-f3c4"
},
{
"name": "https://github.com/bigbluebutton/bigbluebutton/pull/20279",
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/pull/20279"
},
{
"name": "https://github.com/bigbluebutton/bigbluebutton/commit/a9d436accdcd26ea66bed9f391488ac128cd62d1",
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/commit/a9d436accdcd26ea66bed9f391488ac128cd62d1"
},
{
"name": "https://github.com/bigbluebutton/bigbluebutton/commit/ea6e9461dceae8fa593543d8c686f77bb8677e72",
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/commit/ea6e9461dceae8fa593543d8c686f77bb8677e72"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-38518",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-07-02T19:57:25.410885Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-07-03T15:44:53.730Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "bigbluebutton",
"vendor": "bigbluebutton",
"versions": [
{
"status": "affected",
"version": "\u003c 2.6.18"
},
{
"status": "affected",
"version": "\u003e= 2.7.0, \u003c 2.7.8"
},
{
"status": "affected",
"version": "\u003e= 2.8.0, \u003c 3.0.0-alpha.7"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "BigBlueButton is an open-source virtual classroom designed to help teachers teach and learners learn. An attacker with a valid join link to a meeting can trick BigBlueButton into generating a signed join link with additional parameters. One of those parameters may be \"role=moderator\", allowing an attacker to join a meeting as moderator using a join link that was originally created for viewer access. This vulnerability has been patched in version(s) 2.6.18, 2.7.8 and 3.0.0-alpha.7."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 4.6,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-284",
"description": "CWE-284: Improper Access Control",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-06-28T20:25:40.743Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4m48-49h7-f3c4",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-4m48-49h7-f3c4"
},
{
"name": "https://github.com/bigbluebutton/bigbluebutton/pull/20279",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/pull/20279"
},
{
"name": "https://github.com/bigbluebutton/bigbluebutton/commit/a9d436accdcd26ea66bed9f391488ac128cd62d1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/commit/a9d436accdcd26ea66bed9f391488ac128cd62d1"
},
{
"name": "https://github.com/bigbluebutton/bigbluebutton/commit/ea6e9461dceae8fa593543d8c686f77bb8677e72",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/bigbluebutton/bigbluebutton/commit/ea6e9461dceae8fa593543d8c686f77bb8677e72"
}
],
"source": {
"advisory": "GHSA-4m48-49h7-f3c4",
"discovery": "UNKNOWN"
},
"title": "bbb-web API additional parameters considered"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2024-38518",
"datePublished": "2024-06-28T20:25:40.743Z",
"dateReserved": "2024-06-18T16:37:02.727Z",
"dateUpdated": "2024-08-02T04:12:25.127Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
Loading timeline…
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.
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.