CVE-2025-14273

highpriority · track · 33EPSS 0.003 · 18 %ileDEEUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.26% (18th) EPSS
CVSS 8.3 · high
Is it mine?
24 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-28

Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 with the Jira plugin enabled and Mattermost Jira plugin versions <=4.4.0 fail to enforce authentication and issue-key path restrictions in the Jira plugin, which allows an unauthenticated attacker who knows a valid user ID to issue authenticated GET and POST requests to the Jira server via crafted plugin payloads that spoof the user ID and inject arbitrary issue key paths. Mattermost Advisory ID: MMSA-2025-00555

01

cvss

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

8.3
010

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

v3.18.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:Lprimary · NVD / NIST USexploitability 3.9 · impact 3.7
v3.17.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:Lsecondary · ENISA EU
v3.17.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:Lsecondary · responsibledisclosure@mattermost.comexploitability 3.9 · impact 2.7
v3.17.2highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:Lsecondary · OSV
v3.17.6highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

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

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-303USCWE-303US
04

affected products (24)

Products and version ranges known to be affected.

showing 20 of 24
05

advisories (3)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2025-2913Mattermost: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2025-12-22csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Mattermost ausnutzen, um Sicherheitsvorkehrungen zu umgehen.

  • GHSA-qvmc-92vg-6r35Mattermost with Jira plugin enabled has Incorrect Implementation of Authentication Algorithm2025-12-22ghsa · osvUS

    Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 with the Jira plugin enabled and Mattermost Jira plugin versions <=4.4.0 fail to enforce authentication and issue-key path restrictions in the Jira plugin, which allows an unauthenticated attacker who knows a valid user ID to issue authenticated GET and POST requests to the Jira server via crafted plugin payloads that spoof the user ID and inject arbitrary issue key paths. Mattermost Advisory ID: MMSA-2025-00555

  • GO-2026-4275Mattermost with Jira plugin enabled has Incorrect Implementation of Authentication Algorithm in github.com/mattermost/mattermost-plugin-jira2026-01-12vendor · osvUS

    Mattermost with Jira plugin enabled has Incorrect Implementation of Authentication Algorithm in github.com/mattermost/mattermost-plugin-jira. 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-plugin-jira before v4.4.1.

06

also known as (5)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdosvcert_bundnvdNVDCVE.orgMITRE
published 2025-12-22modified 2026-06-17
08

references (5)

External citations — patches, advisories, analysis.

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