CVE-2020-14456 Security feature bypass in n/a

What is CVE-2020-14456?

CVE-2020-14456 is a high-severity vulnerability in n/a, published on 19 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in Mattermost Desktop App before 4.4.0. The Same Origin Policy is mishandled during access-control decisions for web APIs, aka MMSA-2020-0006.

Weakness: CWE-346

Which versions are affected by CVE-2020-14456?

It affects 1 product.

Products include Mattermost Mattermost Desktop.

How do I fix CVE-2020-14456?

No fix has been published for CVE-2020-14456 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-14456 being exploited?

There is no known exploitation of CVE-2020-14456 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2016-11064 Code injection in n/a Critical 9.8
• CVE-2019-20856 Code injection in n/a Critical 9.8
• CVE-2019-20861 Code injection in n/a High 8.8
• CVE-2026-1046 Arbitrary application execution via unvalidated server-controlled URLs in Help menu High 7.6
• CVE-2026-8075 Posting a malicious markdown image crashes the Mattermost Desktop App Medium 6.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-w8pp-vvm7-4qqr.