CVE-2019-20849
An issue was discovered in Mattermost Mobile Apps before 1.26.0. Cookie data can persist on a...
An issue was discovered in Mattermost Mobile Apps before 1.26.0. Cookie data can persist on a device after a logout.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in Mattermost Mobile Apps before 1.26.0. Cookie data can persist on a device after a logout.
- Record
CVE-2019-20849- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-459
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in Mattermost Mobile Apps before 1.26.0. Cookie data can persist on a device after a logout.
- Record
CVE-2019-20849- Updated
- 2026-11-02
EUVDEUVD-2019-11386 No score
An issue was discovered in Mattermost Mobile Apps before 1.26.0. Cookie data can persist on a device after a logout.
- Record
EUVD-2019-11386- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-qhj6-chh8-8c88 No score
An issue was discovered in Mattermost Mobile Apps before 1.26.0. Cookie data can persist on a...
An issue was discovered in Mattermost Mobile Apps before 1.26.0. Cookie data can persist on a device after a logout.
- Record
GHSA-qhj6-chh8-8c88- Weakness
- CWE-200
- Updated
- 2026-11-02
OSV
An issue was discovered in Mattermost Mobile Apps before 1.26.0. Cookie data can persist on a device after a logout.
- Record
CVE-2019-20849- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-20849 is a medium vulnerability (CVSS 5.3) in Mattermost Mobile, published June 19, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.90%, the 59th percentile. No source names a fixed version.