CVE-2023-5968

mediumpriority · track · 30EPSS 0.005 · 43 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

0.51% (43rd) EPSS

CVSS 4.9 · medium

Is it mine?

16 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

Mattermost fails to properly sanitize the user object when updating the username, resulting in the password hash being included in the response body.

cvss

Technical severity, 0–10. One row per scoring source.

4.9

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 1.2 · impact 3.6

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:Nsecondary · ENISA EU

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:Nsecondary · responsibledisclosure@mattermost.comexploitability 1.2 · impact 3.6

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:Nsecondary · OSV

v3.14.7mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:Psecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-116USprimaryCWE-116USCWE-200USCWE-200US

exploits (1)

Public proof-of-concept and weaponised exploit code.

Curtail-Inc/hello-ReGrade-securityFind the vulnerability your tests were never written to catch. A ReGrade demo modeling CVE-2023-5968: catch a password-hash leak by comparing an app to itself.PoC · poc_in_github

affected products (16)

Products and version ranges known to be affected.

Mattermost Mattermost≤ 0 ≤9.0.0enisa_euvdEU
Mattermost Mattermost≤ 0 ≤7.8.11enisa_euvdEU
Mattermost Mattermost≤ 0 ≤8.0.3enisa_euvdEU
Mattermost Mattermost≤ 0 ≤8.1.2enisa_euvdEU
mattermost mattermost≤ 7.8.11nvdUScpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*
mattermost mattermost8.0.0 → 8.0.3nvdUScpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*
mattermost mattermost8.1.0 → 8.1.2nvdUScpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*
mattermost mattermost= 9.0.0nvdUScpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*
Go github.com/mattermost/mattermost-server< 5.3.2-0.20230825233148-f787fd63368aosvUSpkg:golang/github.com/mattermost/mattermost-server
Go github.com/mattermost/mattermost-server/v5< 5.3.2-0.20230825233148-f787fd63368aosvUSpkg:golang/github.com/mattermost/mattermost-server/v5
Go github.com/mattermost/mattermost-server/v6< 5.3.2-0.20230825233148-f787fd63368aosvUSpkg:golang/github.com/mattermost/mattermost-server/v6
Go github.com/mattermost/mattermost-server/v65.4.0-rc1 → 7.8.12osvUSpkg:golang/github.com/mattermost/mattermost-server/v6
Go github.com/mattermost/mattermost/server/v8< 8.0.0-20230825233148-f787fd63368aosvUSpkg:golang/github.com/mattermost/mattermost/server/v8
Go github.com/mattermost/mattermost/server/v88.0.0 → 8.0.4osvUSpkg:golang/github.com/mattermost/mattermost/server/v8
Go github.com/mattermost/mattermost/server/v88.1.0 → 8.1.3osvUSpkg:golang/github.com/mattermost/mattermost/server/v8
Go github.com/mattermost/mattermost/server/v89.0.0 → 9.0.1osvUSpkg:golang/github.com/mattermost/mattermost/server/v8

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-r67m-mf7v-qp7jMattermost password hash disclosure vulnerability2023-11-06ghsa · osvUS
Mattermost fails to properly sanitize the user object when updating the username, resulting in the password hash being included in the response body.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2023-11-06modified 2026-06-17

related (698)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-20245US	—OT critical	25.3% (98th)	KEV	2026-06-04
A vulnerability in the CLI of Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator,…
CVE-2024-38475US	critical9.1OT critical	100.0% (100th)	KEV	2024-07-01
Improper escaping of output in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to map URLs to filesystem locations that are permitted to be served by the se…
CVE-2022-42948US	critical9.8OT critical	2.71% (86th)	KEV	2023-03-24
Cobalt Strike 4.7.1 fails to properly escape HTML tags when they are displayed on Swing components. By injecting crafted HTML code, it is possible to remotely execute code in the C…
CVE-2022-24682US	medium6.1OT critical	30.9% (98th)	KEV	2022-02-09
An issue was discovered in the Calendar feature in Zimbra Collaboration Suite 8.8.x before 8.8.15 patch 30 (update 1), as exploited in the wild starting in December 2021. An attack…
CVE-2009-1151US	critical9.8OT critical	96.6% (100th)	KEV	2009-03-26
Static code injection vulnerability in setup.php in phpMyAdmin 2.11.x before 2.11.9.5 and 3.x before 3.1.3.1 allows remote attackers to inject arbitrary PHP code into a configurati…

+693 more

references (5)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan