CVE-2025-9072

mediumpriority · track · 22EPSS 0.002 · 7 %ileDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.18% (7th) EPSS
CVSS 5.4 · medium
Is it mine?
35 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-23

Mattermost versions 10.10.x <= 10.10.1, 10.5.x <= 10.5.9, 10.9.x <= 10.9.4 fail to validate the redirect_to parameter, allowing an attacker to craft a malicious link that, once a user authenticates with their SAML provider, could post the user’s cookies to an attacker-controlled URL.

01

cvss

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

7.6
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.6

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.3 · impact 2.7
v3.17.6highAV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Lsecondary · FSTEC (BDU) RU
v3.17.6highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Lsecondary · ENISA EU
v3.17.6highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Lsecondary · responsibledisclosure@mattermost.comexploitability 2.1 · impact 5.5
v3.17.6highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Lsecondary · OSV
v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

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

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-601USCWE-601USCWE-601US
04

affected products (35)

Products and version ranges known to be affected.

showing 20 of 35
05

advisories (3)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2025-1856Mattermost Server: Mehrere SchwachstellenDeutsch2025-08-17csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Mattermost Server ausnutzen, um Informationen offenzulegen, Sicherheitsmaßnahmen zu umgehen oder Code auszuführen.

  • GHSA-69j8-prx2-vx98Mattermost Open Redirect vulnerability2025-09-15ghsa · osvUS

    Mattermost versions 10.10.x <= 10.10.1, 10.5.x <= 10.5.9, 10.9.x <= 10.9.4 fail to validate the redirect_to parameter, allowing an attacker to craft a malicious link that, once a user authenticates with their SAML provider, could post the user’s cookies to an attacker-controlled URL.

  • GO-2025-3958Mattermost Open Redirect vulnerability in github.com/mattermost/mattermost-server2025-09-17vendor · osvUS

    Mattermost Open Redirect vulnerability in github.com/mattermost/mattermost-server

06

also known as (6)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bduosvcert_bundNVDCVE.orgMITRE
published 2025-09-15modified 2026-10-19
08

references (4)

External citations — patches, advisories, analysis.

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