CVE-2024-24774Network attack vector

Issue disclosure via unchecked security-level subscription filters

Published Feb 9, 2024 · Updated Aug 21, 2024

Incorrect authorization in Mattermost Jira Plugin before 4.0.0-rc1 allows remote authenticated users to receive restricted Jira issues. The subscription validator accepts security-level filter values without confirming that the subscribing Jira user can access those levels, while webhook matching forwards issues whose security setting satisfies the untrusted filter. A registered Jira user able to create a Mattermost channel subscription can therefore expose issue content from security levels unavailable to that account.

CVSS severity3.4
Low
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Mattermost Jira Plugin before 4.0.0-rc1 allows remote authenticated users to receive restricted Jira issues. The subscription validator accepts security-level filter values without confirming that the subscribing Jira user can access those levels, while webhook matching forwards issues whose security setting satisfies the untrusted filter. A registered Jira user able to create a Mattermost channel subscription can therefore expose issue content from security levels unavailable to that account.

The record

CVE
CVE-2024-24774
Published
Feb 9, 2024
Updated
Aug 21, 2024
Vendor
Mattermost
Product
Mattermost
Classifications
CWE-863, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 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=0 <=8.1.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Mattermost · Mattermostversion=0 <=8.1.7

Published CVSS scores

4.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N
4.8GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
3.4Mattermost, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1213Data from Information Repositories

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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