SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2020-14455

Prompting for HTTP Basic Authentication is mishandled, allowing phishing, aka MMSA-2020-0007.

MEDIUM 6.5EPSS 1.17%

Does this matter?

Lower severity and a low EPSS score (1.17%). Track it; it rarely justifies an emergency change on its own.

Description

An issue was discovered in Mattermost Desktop App before 4.4.0. Prompting for HTTP Basic Authentication is mishandled, allowing phishing, aka MMSA-2020-0007.

CVSS 3.1
6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS
1.17% probability · 67th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-287
Affected
mattermost/mattermost desktop
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 1.17%26 October 202626 October 2026

EPSS 1.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.