CVE-2024-45835

Cookie disclosure via unset Electron security fuses

Published Sep 16, 2024 · Updated Sep 16, 2024

Protection mechanism failure in Mattermost Desktop App 5.8.0 and earlier allows local users to read Chromium cookies. The packaged Electron binary leaves cookie encryption and several hardening fuses unset, permitting cookie recovery and other runtime abuse. Exploitation requires local low-privileged access and high complexity; the confirmed consequence is disclosure of Chromium cookies.

CVSS severity2.5
Low
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Protection mechanism failure in Mattermost Desktop App 5.8.0 and earlier allows local users to read Chromium cookies. The packaged Electron binary leaves cookie encryption and several hardening fuses unset, permitting cookie recovery and other runtime abuse. Exploitation requires local low-privileged access and high complexity; the confirmed consequence is disclosure of Chromium cookies.

The record

CVE
CVE-2024-45835
Published
Sep 16, 2024
Updated
Sep 16, 2024
Vendor
Mattermost
Product
Mattermost
Classifications
CWE-693, T1539
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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 <=5.8.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Mattermost · Mattermostversion=0 <=5.8.0

Published CVSS scores

2.5MattermostCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-693Protection Mechanism Failure
T1539Steal Web Session Cookie

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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