CVE-2019-20851

An issue was discovered in Mattermost Mobile Apps before 1.26.0

published June 19, 2020

CVSS
—
EPSS
1%
Percentile
72.0
In the wild
Unconfirmed
What it is

⚠️ A sneaky directory traversal is hiding in Mattermost Mobile Apps before version 1.26.0! An attacker can use the Video Preview feature to overwrite files on your device—yikes! Think of this like a delivery driver who has a key to your mailroom but can also access any box inside—what if they decided to swap your important package with something else entirely? That's the risk here! An attacker exploiting this vulnerability could overwrite critical files on your device, potentially altering or deleting important data before you even notice it’s missing. This could lead to a serious disruption in your workflow or personal device functionality—a real headache!

Put simply

Think of this like a delivery driver who has a key to your mailroom but can also access any box inside—what if they decided to swap your important package with something else entirely? That's the risk here! This directory traversal vulnerability allows attackers to manipulate file paths via the Video Preview feature, leading to unauthorized file overwrites on affected devices. This means they can access and change files they shouldn’t have access to at all.

What to do

An attacker exploiting this vulnerability could overwrite critical files on your device, potentially altering or deleting important data before you even notice it’s missing. This could lead to a serious disruption in your workflow or personal device functionality—a real headache! Upgrade your Mattermost Mobile Apps to version 1.26.0 or later to patch this vulnerability. Regularly audit your apps for updates and apply them promptly—keeping your software up-to-date is your first line of defense! You've got this! With these steps, you can secure your device and keep your data safe. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01385 · 72.0th percentile
Published
2020-06-19T14:02Z
EPSS history
Timeline
  • 19 JUN 14:02Z
    An issue was discovered in Mattermost Mobile Apps before 1.26.0
    cvelistv5