🛡️ CVE-2017-18873 — mattermost-server

⚪ Unknown ✅ No Known Exploit CWE-20 OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Mattermost Server is vulnerable to channel invisibility DoS via misformatted post in github.com/mattermost/mattermost-server

Mattermost Server is vulnerable to channel invisibility DoS via misformatted post in github.com/mattermost/mattermost-server.

NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions.

(If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.)

The additional affected modules and versions are: github.com/mattermost/mattermost-server before v4.1.2-0.20171013141717-ee57a5829ab1, before v4.2.1-0.20171013140502-b3e4b0ac9168.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability low.

Weakness class

CVE-2017-18873 is classified as CWE-20: Improper Input Validation. The application accepts input without checking that it has the expected form, so malformed values reach code that assumes they are well formed.

Affected software

CVE-2017-18873 is recorded against 1 package.

  • github.com/mattermost/mattermost-server

Timeline and source

Published on 24 May 2022 and last revised on 26 February 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Package)
mattermost.com (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE CWE-20
Public Exploit ✅ No
Source OSV
Published 2022-05-24
Updated 2026-08-12
Modified 2026-02-26
Fix URL N/A

Affected Packages

Software From version Fixed in
github.com/mattermost/mattermost-server — —

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