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CVE-2024-1952

15
FAUCET Score

CVE-2024-1952 is a medium-severity vulnerability affecting Mattermost version 8.1.x before 8.1.9. It allows an authenticated attacker to access the content of individual posts in channels they are not a member of. This occurs because Mattermost fails to properly sanitize permalink data when a plugin updates an ephemeral post. The vulnerability has a CVSS score of 4.3, indicating low impact on confidentiality and no impact on integrity or availability, with a low attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.1.0, <= 8.1.8CPE match
cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*
>= 8.1.0, < 8.1.9CPE matchmatch criteria
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.1LOW

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
29.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 38th percentile among its peer group of 21,974 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

gopatch availablevia ghsa
Product: github.com/mattermost/mattermost/server/v8Fixed in: 9.4.0

Vendor Advisories (1)

goGHSA-r4fm-g65h-cr54low

Mattermost incorrectly allows access individual posts

Feb 29, 2024

References

mattermost.com / security-updates
Vendor Advisory