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Fencer Intel
medium 4.9

CVE-2025-11794 json

Password hash and MFA secret returned in user email verification endpoint

published 11mo ago modified 23d ago also GHSA-mqp8-pgg5-7x7m , GO-2025-4130 , EUVD-2025-197607

cvss
4.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits
0
none known

Summary

Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to sanitize user data which allows system administrators to access password hashes and MFA secrets via the POST /api/v4/users/{user_id}/email/verify/member endpoint

Patch / fix

  • go github.com/mattermost/mattermost-server 10.5.12, 10.5.12+incompatible, 10.11.4, 10.11.4+incompatible, 10.12.1, 10.12.1+incompatible
  • go github.com/mattermost/mattermost/server/v8 8.0.0-20250929212932-a41db04d2746
  • Mattermost Mattermost 10.5.12, 10.11.4, 10.12.1, 11.0.0
  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1

Is CVE-2025-11794 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
11mo ago

Exploit prediction

0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 4.9 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
GitHub 3.1 4.9 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
go github.com/mattermost/mattermost-server
>=10.11.0, <10.11.4
>=10.5.0, <10.5.12
>=10.12.0, <10.12.1
>=10.5.0+incompatible, <10.5.12+incompatible
>=10.11.0+incompatible, <10.11.4+incompatible
>=10.12.0+incompatible, <10.12.1+incompatible
10.11.4
10.5.12
10.12.1
10.5.12+incompatible
10.11.4+incompatible
10.12.1+incompatible
go github.com/mattermost/mattermost/server/v8
<8.0.0-20250929212932-a41db04d2746
8.0.0-20250929212932-a41db04d2746
go github.com/mattermost/mattermost-server/v5
all versions
 no fix listed
go github.com/mattermost/mattermost-server/v6
all versions
 no fix listed

Affected products

  • Mattermost Mattermost

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.