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Medium 6.1Published Nov 13, 2025

CVE-2025-59480Inadequate validation of SSO redirect credentials permits credential theft

Updated under an hour ago ()

Does this affect you?

It affects Mattermost and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Mattermost Mobile Apps versions <=2.32.0 fail to verify that SSO redirect tokens originate from the trusted server, which allows a malicious Mattermost instance or on-path attacker to obtain user session credentials via crafted token-in-URL responses

CVSS
6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N
Weakness (CWE)
CWE-352
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
Mattermost
NVD analysis
Analyzed
Record last updated
Nov 13, 2025
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
Mattermost Mattermost
mattermost:mattermost (from the name)
through 2.32.0; 2.33.0 not affected
CNA record
mattermost mattermost_mobile
mattermost:mattermost_mobile
before 2.33.0
NVD

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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