Vulnerability Details : CVE-2021-34434

Potential exploit
In Eclipse Mosquitto versions 2.0 to 2.0.11, when using the dynamic security plugin, if the ability for a client to make subscriptions on a topic is revoked when a durable client is offline, then existing subscriptions for that client are not revoked.
Published 2021-08-30 20:15:07
Updated 2023-10-02 12:15:10
Source Eclipse Foundation
View at NVD,   CVE.org
Vulnerability category: BypassGain privilege

Products affected by CVE-2021-34434

Exploit prediction scoring system (EPSS) score for CVE-2021-34434

EPSS FAQ
0.25%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 46 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-34434

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
 MEDIUM AV:N/AC:L/Au:N/C:P/I:N/A:N
10.0
2.9
 NIST
5.3
 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.9
1.4
 NIST

CWE ids for CVE-2021-34434

  • The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.
    Assigned by: emo@eclipse.org (Secondary)
  • The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-34434

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