CVE-2023-43798Network attack vector

Authenticated SSRF via unvalidated redirect target

Published Oct 30, 2023 · Updated Sep 5, 2024

SSRF in BigBlueButton before 2.6.12 and 2.7.0-alpha.1 through 2.7.0-beta.3 allows remote authenticated users to reach internal resources. The insertDocument path validates the initial presentation URL, but httpclient.execute follows redirects to an unvalidated destination. Exploitation requires administrative API access and the shared API Secret Salt; the server can then read or modify reachable internal resources.

CVSS severity5.6
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in BigBlueButton before 2.6.12 and 2.7.0-alpha.1 through 2.7.0-beta.3 allows remote authenticated users to reach internal resources. The insertDocument path validates the initial presentation URL, but httpclient.execute follows redirects to an unvalidated destination. Exploitation requires administrative API access and the shared API Secret Salt; the server can then read or modify reachable internal resources.

The record

CVE
CVE-2023-43798
Published
Oct 30, 2023
Updated
Sep 5, 2024
Vendor
BigBlueButton Inc.
Product
BigBlueButton
Classifications
CWE-918, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.6.12
  2. Affected versionversion=>= 2.7.0-alpha.1, < 2.7.0-rc.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

BigBlueButton Inc. · BigBlueButtonversion=< 2.6.12; version=>= 2.7.0-alpha.1, < 2.7.0-rc.1

Published CVSS scores

5.4NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
5.6GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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